Nostr is not there yet, but it will be. Rumble is the solution at the moment. You can just mirror your YT content to Rumble and direct your followers there.
Discussion
Nostr will most likely not be there in the foreseeable future because videos are heavy.
Any relay run by volunteers who want to contribute to freedom of speech can hold a lot of text, but can't hold videos and clients need to download data before verifying hashes (making the use of untrusted relays potentially inefficient).