there’s no communities for my niche interests!!!
more like “i want a ready-made community where other people already putting effort into posting cool and intersting stuff, and all I want to do is sit on my ass and shower posts generously with “”“muh upvotes™””“”
Yes, you could create a community on reddthat (if that server allows for new communities to be created and hasn’t disabled that feature).
No, they don’t need to be all related. A server admin likely would tell you “hey please don’t create this one here, because this server’s focus is xy”.
That’s more info than I’ve been able to find anywhere on Lemmy lol thank you very much