Hey, sorry for the late reply.
You can either look at https://join-lemmy.org/ or https://lemmyverse.net/ to find a new instance.

I also found this tool that helps you to sync communities you're subscribed to to other accounts on other instances: https://github.com/wescode/lemmy_migrate

Edit: I found another migration tool which has a GUI, haven't tested it yet though. https://github.com/CMahaff/lasim