I think you'd get very different people at those two. Perhaps stereotyping, but do you want more career driven or socially driven?

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.