am i doomed to be alone?

every time i meet a guy and i start to like him, you could say he feels the same way about me, but i just get the urge to stalk and find more about them (on socials ofc, i'm not joe goldberg lol). when i see their friends and following and notice people who are better looking than me, i feel like i die a little. i don't know how to explain it. every guy i've met has been from dating apps, where looks are everything, so i can't help but feel replaceable. i don't really believe i can compare to the people he's following or friends with. i know i shouldn't think this, but sometimes i wonder if he talks to other people who are much better than me. i don't think i offer a lot in the personality department either lol.

tldr: i overthink a lot and get depressed from made-up scenarios.