Original clunky title: How do ActivityPub instances’ people initially find remote instances’ people/communities/channels/etc. to vary their feeds?
Given that an instance won’t see remote instance’s people and stuff to follow/subscribe to until someone there has found them and followed/subscribed…That’s generally how ActivityPub works, isn’t it?
besides the communities or websites to find communities, as other have already posted. Some instances and communities add their community to https://lemmy-federate.com/. A project using a bot that initaly joins a community from different instances, so you are able so find them easier.