Yes, but only if your friends are also estranged from their family, and you run a huge risk of running into people who are estranged and have not addressed their problems. You can have close friends who are close to their family, but if you don't respect their familial obligations and make sure you keep an appropriate distance, you will lose them

I had a strong FoC through the queer community in the 90s, but I unfortunately didn't understand narcissistic learned behaviors at the time, and fell right back into a significant familial-type relationship with an N roommate who isolated me

I have since cut ties with that person, but since queerness is far more accepted by society in general, I don't think that I want to try this route again, since it's more likely that people seeking out the queer community as a FoC have deeper issues

I've also lost all of the friends I did have partially because I'm childless, and they're not, and partially because apparently I tend to pick fairweather friends

As far as solving this problem goes, I'm looking at adult education classes run by a local studio, and I'm thinking about starting a meet-up for childless adults (since I think being replaced by other parents in a friend role is common to childless adults). I haven't settled on one or another yet

I tried church, but the pastor was overly interested in me in a red flag sort of way, and also I'm an atheist (which means UU only), but I have very low tolerance for hippie bullshit (which means not liking UU customs)

It's a tough problem to solve, but there are ways out