I am also kinda new, but it seems like it leans towards multiple accounts. Some lemmy instances don’t federate, so I have two.

And then it seems like there is a alot of style and content overlapp between pixelfed and mastadon. So I just have a pixelfed account and follow a few folks from Mastond there.

It would be weird to see pixel fed type posts on my lemmy feeds, but I guess that is just how am using it so far