Again, federation. You aren't leaving this instance just because you interact with another instance. You aren't leaving your friends behind. With federation, they already have access to your new community.

The idea of begging an instance admin to change their position is the antithesis of federation. Join or start a community on an instance where that community is welcomed, appreciated, and supported. If that isn't here, find another one. If you can't find one, go start your very own instance just to host your comm.

Lemmy != Reddit. Don't bring that Reddit mindset here.

You can export your followed communities in settings, then import them on another instance after you make an account.

As long as the instance you choose federates with lemmy.world you'll see exactly the same communities you do now.

Db0 tends to host piracy related communities,.

There's nothing preventing you from remaining friends with the same people while you're on a different instance. Federation takes care of that.