@melp@beehaw.org There's this Lemmy post on !peertube@lemmy.wtf listing generic well-federated instances, but if you don't care about the ability to follow other PeerTube channels from it, I'm pretty sure you can use pretty much any instance and it doesn't really matter.
Ironically my CherryPick instance used to have it's own Peertube instance, but they've closed it sadly