I feel like 75% of Mastodon are people talking about Linux. If you don’t care about Linux you feel alienated. I enjoy Mastodon and Lemmy, but the lack of more diverse subjects gets to me if I browse for too long.
Update: I took your advice and purchased a laptop for Linux, and now I care about it! Problem solved.
The knitting and writing crowd seems to be quite big but that might just be my feed. That’s something to keep in mind, different communities are on here, you just might not have found them yet.