During Reddit’s APIcalypse, people made a bunch of Sports related communities to try and mirror Reddit’s experience, but we simply don’t have the user base here to support team-focused communities, so most of the just sit there. People ran game-day bots for a while, but then realized the poor bot was only talking to itself, and turned it off.

Fanaticus.social is trying to be what you want, so I would look there.