Another thing to consider, if it’s an option and you aren’t already doing so, is to try more dating. Finding a girlfriend is another way to keep from being isolated.
I can make friends, I just can’t keep them and don’t have any because I don’t trust a single person on the planet. I operate under the assumption that all people have malicious purposes. 99% of the time I’m right, so I play it safe and avoid them all.
Don’t think I’m being hyperbolic. I literally don’t turn my back on people.