I consider myself a Progressivist, which does make me very aligned with left-wing politics, I guess. The majority of my political posts on here, though, are me responding to wild accusations from people from the right whom I don't hate. And responding to them just made matters worse, as I suspect this discussion of politics and even me resorting to jokes at times, well the right didn't really take it very well. It lost me a few friends on the right for my political beliefs.
So I'm afraid I don't relate fully.
No worries. I’m thinking mainly about reddits far left communities, mainly r/communism and r/communism101 (I’m now banned from both). Most independent far left forums (e.g.revleft.com) have almost disappeared or gone very inactive. I think Its easier for young people to set up in reddit and manage them than have to run your own server. they can get more people to join as its such a large platform as well. Independent forums live and die based on google search results and google has made changes to downplay both far left and far right results as unreliable sources I recall.