Wow; I'm so sorry you felt so distressed as to be asking how to commit suicide!
There are times I feel hopeless like that, but that's such a (obviously) big and drastic move, that will affect those around you (even if they don't show they care), and we don't even know what's on "the other side".
I'm a bit distressed by some of the "tough talk" I see here. Like "frustrated that you can't get it through your thick skull"? And then, you are this, you are that, you are the other etc. "your self imposed loneliness because you lack the courage...". And then another with some generalization about this is how all these autists often respond, with their thinking they were attacked, and wanting everyone to cater to them, etc.
Don't you know that every autist has probably heard all of this 1000 times, and it doesn't bring them any closer to just suddenly "getting" it! This is just venting [admittedly] their own frustration, and not actually helping the person. (and so, it often DOES become legitimate "attacking", because that's what people do when they get frustrated. Don't negate this!)
Basically, the attitude behind tough talk is that the person is just being "illogical", and needs to have "logic" and "reason" drummed into him until it finally "clicks" When it doesn't, then NT's just get frustrated and conclude he "doesn't want help", "this is how they always respond", etc. except that the person themselves will begin contrasting how they used to have some of these problems, but then one day just started to fix themselves. (The looming question; why won't the other person? Must be a "character" issue; even if this term isn't used. But the stuff said, and the whole "tough talk" approach itself seems to presume that).
There is a such thing as "toxic positivity", and it's all driven by a "rugged individualist" culture, which frowns on anyone not as "strong" as we are, and who we think is trying to get some kind of "free ride" in contrast to all the "work" we had to do!
I began having second thoughts about CBT, because I realized it was more of the same; of trying to hit all of our problems with pure reason. But the problem is, they don't stem from reason. The CBT formula I was given, simplified is "if we change our thinking, then this will change our emotions, and then our behavior". So there's an acknowledgment that the problem is centered around the emotions. Thinking is then made the sole determinant of the "good" or "bad" of the situation, which controls everything else. It's the negative thinking that makes it feel so bad, and positive thinking that will make it feel better.
Trying to practice it myself, and then seeing others, including those who preach it loudly themselves (and both secular and religious; it all boils down to this in some way or form), it's never that simple; and then the people begin speaking of this long, endless "process", and many of them ultimately fail themselves. Yet they have preached to others that it's just a simple "choice" (making it sound like flipping a switch), and so there's "no excuse".
To not go down the wrong tangent, the emotions are the problem, and "thinking" alone doesn't make them go away; and no, not even with a "process". That often becomes just an endless loop of suppression, and the problems just come out somewhere else, while you're gritting your teeth and trying to be "positive".
What I wanted to get to with this, is his biggest complaint, of being alone. I went through this too, until 26. And I got all the same counsel from everyone, and no one even knew about autism; as long as I was basically functioning, I was assumed (including by self, as well as everyone else) to be just another NT, who simply needed to recondition my self through "thinking"; and have all this reason and tough talk pounded into me until I finally got it; or be brushed off as "not wanting to change".
I believe we are all driven by instinct. People want to criticize autistic "defenses"; but defense is part of the survival instinct. And I see NT's reaction to them is just as much defense mechanism. That ties into the topic I started awhile back; where we all have the same defenses, but autists are the ones to get tagged with this in a particular way, as if others didn't have them too.
So responses to autists who are "incels" (I mean the original, generic meaning of the term; not the current politicized one that has become framed around a race group) basically boil down to the survival instinct. Women will want men who are likely to be providers and protectors. (there are some feministic types today who will dispute this and claim they don't want this anymore. But This is still not everyone). I even figure, since they are the ones born with the organs to carry and nurse a child (which right there are physically vulnerable spots on the body; the latter even when not nursing a child), this is why our civilizations developed they way they did. Men had to be stronger and do the hunting and defending. We're not like lions, where the mother can leave the cubs and do all the hunting. (and even then, the male is still the overall protector). This is where the whole "Alpha" and "Chad" memes come from.
So someone not "self-confident" enough, and is is "weird", and doesn't fit in, and yet complaining as if they are helpless and not "doing" enough, etc. will seem less safe. I grew up watching the animal shows on TV with my father, and when I became a teenager and now faced these problems, and that was the explanation given; it subconsciously "made sense" with what I had learned about nature. Yet, there still seemed something "unfair" and even "wrong" about it. But when I resisted, then the "frustration" just increased, and nothing was solved. For one thing, while biologically, we may technically still be "animals"; we nevertheless do consider ourselves to have developed "above" them. We hold each other up to moral standards animals do not have, for whom it is almost 100% "instinct". The autistic child is often bitterly scolded for failing in these social things, but then, people as a whole often act just like animals in ways, and then, the autistic child is just taught to "just deal with it", and "become tougher", etc. Plus, the same survial instinct also includes what I call "inertia'. The desire to hold our ground.
But here's the thing: even if I wasn't in sync with nature in that regard, my own natural instinct, of "reproduction" was still in full gear. The same autism that made me so "unfit" in the survival area didn't shut this down. (I often say it should have, and we'd just be asexuals and be able to go about our business!) I could not "think" it away. I couldn't "sublimate" it away (another set of suggestions I had seen sometimes where you try to disperse the "energy" away by other physical means). And it's WORSE for the autist, because the whole cause of the condition is the failure of sensory regulation; and emotions and sexual urges are all ultimately "sensory". And after awhile, they want to be satisfied NOW! People often hurl the term "entitled" or "thinking they are owed" at incels, but this sense of "demanding" is coming from instinctual drives. The same ones the people criticizing the incel or even the successful "Chad" of female pursuee would have similar reactions to, if it was witheld from them somehow.
Yet everyone is coming to the autistic incel with these long "processes" of "growth" and "self-improvement" that are not only years-long, but are really not even guaranteed to be sucessful; judging by watching others try to apply these principles. "Just forget about women/relationships, etc. and focus on yourself, and then it will come". Are you kidding?
Again, this is hitting an uncontrolled emotional instinct with pure reason (and uncertain supposition of a far-off future good, on top of it). Unless the person is already at a place where he is ready for that kind of counsel and can get a grip of things through thinking; you're just going to get the same defensive and even more frustrated responses people are complaining about.
If the person is already this desperate, then cold "tough talk" could very well be the very final straw that pushes him over! (and have we even seen him in almost a month now? I hope he already didn't go and do this!) When I'm feeling at my most hopeless in life, is when it seems all the "tough talking" responses I got in my life are "THE TRUTH". It's like "If this is really the way the universe is; I shouldn't be here!". In fact, much of our "denial" of things is the hope that we're not totally wrong in this regard.