I'm not sure instance hopping is available yet, but you can always just sign up for the instance you want. However, Lemmy.world is not the "main" instance, Lemmy.ml is. Lemmy.world is the largest instance, which can cause confusion, but it definitely takes an active stance against Marxists and even Anarchists, which is why it is defederated from some of the major leftist instances.

Which instance are you trying to join? Which defederated ones from Lemmy.world do you want to see?

Like others have said you really can’t move, just make a new account

I’ve been on lemm.ee this whole time and I like it. I definitely recommend it if defederation is an issue for you since sunasaurus stance on defederation is it is the big red button and users should have the choice of making a blocklist (unless it’s stuff like illegal content thats defederated). You can even keep your username if it’s not taken on that instance and the beauty of the fediverse is you can move instances and create account as many times as you want

As for having a main instance. No such thing. This picture really helped me understand how federation works as the email anology people use didn’t really help me.

Anyways lemmy.world is just another instance, it just happens to the be the biggest. Lemmy.world ,.ee, .ml, whatever lemmy instance you can think of are completely independent. Think of them as separate websites if that helps. But due to the fediverse protocol they can all share content back and forth, it really is crazy when you think about it

But let me grab our welcome to lemm.ee to post if you wanna see if we’re a good fit for you, if not, happy instance hunting

Edit: Here’s the Welcome to lemm.ee post

I have moved a couple times. No need to get attached to something that is temporary.

Jumping in to ask a question too, is there a way to see what instances are de-federated from?

Also if I don't want to see furry stuff in my time line etc i bloke the community not the instance right?

You can export your subscriptions in the settings, not your posts though.