I guess you need to do some more research on how Lemmy works.

You can follow any community from any instance. For now you could create an account at some lesser populated instances, I had one on lemmy.ml, made another account on monyet.cc. It’s a minor inconvenience that you have to subscribe to communities but other than that my experience with lemmy has been very good.

When someone asks me if I’m on facebook, I can say I’m on The Federation, has a nice ring to it