This is delusional - most people are paired up in some way, even in this day and age when women are abandoning dating and a larger percentage of men don't have partners. It's still the majority condition of humans in America.

You don't believe in your own worth. Asking someone else to believe in your worth when you don't is a form of entitlement. And doubling down on that rather than taking yourself on (with a coach or therapist) might feel righteous, but it's not going to impact your loneliness. Demanding that the world change so you can have what you want rather than you changing to have better success in the world is your real issue - something that you have complete control over. You are correct that your actions and inactions have consequences, no matter how righteous your beliefs around them, you are still going to get the same sad result, I'm sorry to say.