Good luck, Nebula is a paid service. My issue with peertube is that Framasoft is completely unwilling to allow others to make money. They seem to think they can make it work just on peoples kindness but hosting videos is extremely demanding compared to a mastodon instance.
What they should do is find a way to allow server admins and creators to sell content and goods. For instance, I would pay for a Proxmox guide or book.