Download the old rargb database, it obviously isn't being actively updated, but has most of what I watch in movies and tv. I don't know about music, but I found this website not too long ago. I used the spotify downloader since I have a lot of playlists on there, and I was surprised how well it worked.
Odysee was never acquired by google to my knowledge, but I could be wrong. Odysee used to be LBRY but rebranded a year or two ago.
The ! is really useful when you forget you need to run the command with sudo. sudo !!
I had a lot of trouble setting up nextcloud in the past but if you go with the Docker method, it's really easy.
Odysee is probably the biggest one, with a lot of creators having their youtube synced with it. Peertube is also an option, but I've never used it.