Ask Lemmy

So basically I've pretty much stopped using reddit as I've noticed it getting worse and worse over the past few years, and probably even longer. The main thing that kept me on there was the subreddit for my favorite sports team, but I've since found a pretty active online forum that sort of re-creates the enjoyment I got out of discussing them on reddit. I'd like to find something like to simulate the rest of reddit too. I used to love posting on certain forums back in the day, but I don't even know where to start looking. Something like a general use forum, preferably populated by millenials, with discussions about whatever. Movies, music, pop culture, sports, politics, random internet bullshit, whatever. I think it would be great to kind of re-create the sense of seeing new stuff like on reddit, but with a much smaller community.

EDIT: I understand that Lemmy can be viewed as an answer to this question, but it's not for me. I'm looking for an actual forum, with a sense of community. The whole decentralization aspect of the Feidverse seems great to prevent enshittification, or to prevent a billionaire from buying and tanking the place, but I don't really see it ever appealing to normal, non tech savvy people.