I find half the battle here is finding new places to sub to. I’ll browse all but always forget to sub to new ones I see.
I think for sports, it’s difficult as it seems most of us early adopters here are, well let’s say nerdier than the average, and as a rule tend to follow sport less.
Even me, I wouldn’t go out of my way to watch sport, aside from the olympics. But as an introvert that had a shitty home life I learnt quickly how to be a fake extrovert and thus had a lot of friends and so got surrounded by sport and stuff.
Because almost all niche topic communities that i am interested in have very few people posting. The niche topics were also what made reddit interesting to me, i hardly ever browsed all there.