As a "believer" myself (we don't typically use that evangelical terminology but it's close enough) I can completely understand that. People should go to Church for Christ, and anything else, even "community" is a nice bonus but is not going to sustain people when pursued for its own sake, as you're experiencing.

Maybe a sport or hobby club or some other thing you're interested in where people have a specific motivation to get together, bonding and forming "community" more naturally?

Actual pieces of shit don't care. It's very likely more mental than you think. Delete facebook, join the gym, meditate, etc.