I hear ya. I've been missing a sense of community too. I found Sunday Assembly. I'm in Portland and our chapter started in March and is really doing great. It has the sense of community without any dogma or pressure. Check it out and see if there is one in your area. If not, you could start one.
I agree though that the unofficial shunning from people who were supposed to be your friends and love you is unnerving. At least until you get some distance and start to replace it. It is getting better and I've been away 5 years.
bafh