Im joining in on the reddit ditching thing, and was kinda worried at first that i wouldnt be able to like use it the way i did reddit as it feels like a whole new place, but after engaging with posts and people and actually being a part of lemmy rather than being lurk mode all the time i was pleasantly surprised with how easy it is to become a member of the community, theres a reasonable amount of subs (or whatever the other word for em is) that fit my interests, enough linux content and shitposting for my liking, and the overall random posts made by people equally fed up with Leddit. (also i admit i used reddit a little cus there was this post on the fedora sub showing how to fix a sound issue i been having after a recent update)
Keep in mind these communities can be viewed from ANY lemmy instance, you just have to connect to them (usualy just by searching in the community search bar). I just chose my instance based on the general type of communities present here. I was going to jump on beehaw (and in fact did create an account there) but felt that Mander was a better fit for like-minded people to myself.