Owncast or PeerTube?
Both are fediverse services that enable video streaming.
Owncast is specialised on streaming broadcast, PeerTube is general purpose (like YouTube).
PeerTube is integrated with NewPipe on android phones, but actual implementation is probably too messy to be popular.
But owncast has not a mobile application (require someone with java/android skill to create one)
Personally I dont like have 100 different apps.
Probably is better owncast in long run, but I really dont know.