TLDR: Not some wackadoodle hippie thing (think more like Emerson), goes back to Calvinism, some presidents were Unitarian, lots of churches around the US, very very open minded people, be prepared for greybeards
I went from being a loner 20 year old to finding a wife (married 36 years this month) and making many friends by going to a UU church and getting involved with others my age there. Bonus : No religious dogma!
I've heard of similar stuff to this, thank you so much, it turns out there's one of these within a mile of me. Will check it out. I'm very materialist in my beliefs, so some stuff might rub me the wrong way, but it could be worth checking out.
Try UU out then: https://www.uua.org/find
You can read more about UU here: https://en.wikipedia.org/wiki/Unitarian_Universalism
TLDR: Not some wackadoodle hippie thing (think more like Emerson), goes back to Calvinism, some presidents were Unitarian, lots of churches around the US, very very open minded people, be prepared for greybeards