My questions to any single person who wants to date or to be in a relationship, that you may at least want to ask to yourself are:
(1) What do you offer the prospective other? What makes you more special than other single persons who may be talking to these same persons?
(2) What specific type of person are you attracted to and searching for, and why? Is that reasonable based on who you are and/or your current situation?
(3) What are your limitations that could currently repel others from giving you the chance?
(4) What steps have you taken, if any, to be more approachable or to get others more interested as more than a stranger or acquaintance?
(5) Why do you want a partner?
(6) How will you handle much stress and adversity in a relationship?
If you cannot answer these accurately and in detail in your head at least, or if one or more of your answers seems unreasonable or not compatible with the type(s) of person you are looking for, then that is where part of your difficulties could be.
Maybe these people who do not want to take the time to figure those things out are not ready for a relationship or do not see those basic questions as important. Well, then the prospective others may think then you are not taking your relationship attempts seriously from not having either enough desire to put the needed efforts into your searches, to target the right persons or to put your best foot forward.
I just think if one's priority is a relationship, those details should matter to them, and the others they meet who probably already have their own answers there, and most our efforts thus should be there instead of complaining about others which will not solve anything.
Being simple minded, making excuses, not finding fault mostly with ourselves, acting superior to others, being too pushy or avoidant or jumping over steps rarely works for finding a partner.