It’s in an SQL database, I think, but yeah, pretty much.

I pay for YouTube Premium. I get a lot of value from it, and streaming video isn’t cheap. I don’t think it’s reasonable for anyone to think they should provide it for free.

Mail is the single thing that I absolutely refuse to self-host. Been there, got the scars.

You could try setting adguard to listen on all interfaces?

I wouldn’t make any storage accessible to the internet without VPN.

Might not be technically what you are asking for, but you really can’t go wrong with Synology for this stuff.