So why do people behave like somebody else not being attracted to you is somehow their fault?

If people are not attracted to you, it’s because you’re not attractive.

So the ONLY solution is to become more attractive.

Its not a societal issue, or a cultural issue, or a problem brought on by the advent of the internet and apps.

You would not have these problems if you were attractive. And whilst maybe you haven’t done anything wrong to be unattractive in cases where the genetic draw holds you back, neither have your dating prospects. So seeking blame and justice and fairness in dating is pointless.