I'm still quite lost when it comes to the fediverse. I created an account on the main instance, however as I understood more how it works, it seems like certain instances that interest me are "defederated" from this instance, and vice versa. So now I want to move my account to be able to see those instances, however I want to keep my follows and my posts I have on this instance. Is that possible?
I read that fediverse is resistant to censorship in this regard, so there must be something I'm missing here.
There's no "main" instance, lemmy.world is the largest one, though
You can check who have defederated with lemmy.world (or any other instance) here
As to your main question: You can't move an account, ActivityPub (and Lemmy) don't have such a feature. There are tools that can migrate your community subscriptions from one account to another (quick search shows for example this), but there's no way to transfer posts/comments. The best you can do is add a link to your bio saying your previous account is @[email protected], at the same time, on your old account you can put a notice that the account is no longer used and people can find you on the new one.
I see, thank you for the explanation. That does make it a little more convoluted than I had hoped. But I suppose it's either that or host an instance myself.