I use computers basically all the time, but phones? Absolutely not. I have a phone, but the thing is usually A: missing, B: out of power, C: in the car, or D: I know where it is but I'm always just ignoring it. I always joke that the dog has used my phone more than I have, what with having chewed on it a bit (it's in a case though, but part of the case is shredded due to that). The main reason I even have one at all is that it can act as a safety device, so that if I find myself in some sort of trouble while out on the road (like my car breaking down) I can call for help. That sort of thing. Bloody useless device otherwise.
Honestly, I find everyone's obsession with the things to be baffling. One of the strangest things I often see in videos, and such is like, some kid getting a gift, they open it up, and it's a new iPhone or something, and they absolutely freak out. Like they just got a box with 10 bazillion dollars in it. So much excitement. I dont think I'll ever understand that. Though, I do understand that my hatred for the things is very much an anomaly.
Though, I will say that it's possible that my use of the stupid things will rise with the advent of AI. Simply meaning it allows me to interact with those remotely (aka, I can ask questions about whatever, whenever). But that's probably about it.
And gaming on the thing? Hah! Ridiculous.
And as for things like Facebook or whatever, well... I have nothing good to say about those. I dont use any of those whatsoever.
Selfies, I dont do those either, but... there's more reason to that which I dont feel like talking about right now.
I dont watch TV either, but I do watch Youtube (with an array of adblockers) which has entirely replaced TV and movies for me.
As for sleeping, well, honestly, I sleep like the dead in any case, blue light or no blue light. As my father puts it, "we could have a zombie apocalypse right outside your window and you'd sleep right through it".
Also, I do often miss older devices. I grew up with DOS-era computers and things like the Atari 2600, NES, SNES, and so on. CRT screens and big blocky IBM computers. Dont get me wrong, I absolutely appreciate the sheer power of the PC I have now, but... I still miss the old ones. They did what you told them. Immediately. Whereas now, Windows likes to sort of sit there for a while as it tries to decide whether to actually do what I want, or just bug out.