I wonder if the downvotes are from people who think you sound incel-y. I mean, you do a little bit, but I think a lot of people nowadays identify with that “there’s no point dating” feeling, though are too nervous to voice it. All but the most narcisissistic of us have a little voice in the back of our minds giving ‘sage’ advice about how worthless we are from time to time, and if you’ve dealt with a lot of rejection that only gets reinforced.
If you do try stuff like tinder, be well advised that it’s a very long shot. You might be better off with a paid service like match.com… my dad found love after his divorce pretty quickly when he joined that site, I assume because anyone who’s paying to be on a dating site is more invested in finding that someone special vs apps like tinder which incentivise short-term approach to dating.