Intriguing question, and I'm not sure how to answer it.
I have moved to "intentional communities" and found very crabby people that were not my tribe, and I've moved to relatively random spots and found awesome community. One instance that surprised me the most: I fell in love with a house, and bought it. Turned out, everyone around me rocked. More specifically, we had common values of: peacefulness (so lived outside of the downtown core), walkability (so lived near the downtown core), beauty (so lived in a relatively heritage area with heritage gardens), nature (so chose space with yards, and gardened them organically and strangely), and freedom (so chose lower cost homeownership to limit job dependency and did not require neighbours to become each other). None of that was outwardly identified, but I believe these were the elements that magically brought people of similar "type" together. We visited, shared tools, helped each other with projects, potlucked... There was room for everyone to be who they were: differences of religion, monogamous or poly, vegetarian or omnivorous, athletic or lazy, etc.
I moved from there to an "intentional community" that claimed to be about exactly those elements, but in which people actually imposed their religions, diets, etc, on each other, were super crabby (even violent), etc.
I've most recently moved to a village where people identify as nothing or, at most, "spiritual but not religious" as folks say. So far, it is gentle, spacious, mellow, kind, friendly. Lots like the first happy one I wrote about above, though with more art and, I would say, spirituality (i.e., soul focus) which feels like a bonus for me.
So, I think it takes a few brave goes. Jump in, try something out, if it's crap, acknowledge that and move on to the next go. I guess just like dating/relationships, when I think about it!
...religious venues (I put it that way because there are people on here from all over the world, just saying "church" doesn't quite cover it all).
For what it's worth, I use the word church and am not at all religious. For me it covers any space, event, moment that feels sacred to a person, so is not religion-specific. Personally, I could just as easily use words like mosque or temple, etc, in the same way.