First you have to learn to love yourself before anyone else can love you. Your negativity comes through on your text. 2nd once you put all that negative thought and behavior behind you put yourself out there. There are tons of community pages that are for singles to sign up and play softball, hike trails, yoga, cooking classes, etc. You will be amazed how many friend's you will make( which may become a romance). I have guy friend's that aren't really drop dead gorgeous but their attitude and personality is phenomenal. They all have a great dating life. You have to fix you first

I don't condone the cheating, but if all your exes did so, all the "mentally stable" women ignore you, and all the "sane" girls from your high school unfriended you, it's likely you. You're projecting, big time. It's time for serious introspection and therapy, for your own sake.

I’m going to go out on a limb and say it’s you

You claim you don't seek out the wrong women but clearly you either do or you are somehow turning good women into cheaters. Either way you need to take a long hard look at what you are doing wrong.

When everyone around you seems crazy except for you, it's not them, it's you.