I've met some really interesting people at maker spaces. Never dated anyone there.

I always thought habitat for humanity would be cool/useful/fun/have interesting people, but they don't do it around here.

I haven't been, but you might try https://austinswingsyndicate.org/

I always make better friends when I'd go places regularly. When I was younger, I'd hop around to a new place frequently. I didn't build lasting friendships this way. Find something you'd like to do for a while.

Volunteering to help out at events can lead to meeting more people.