You can also get an iTunes Match subscription. No idea what it goes for these days but it’s a bit cheaper than Apple Music (doesn’t give you access to any music but lets you sync your music in iTunes to all your devices - still requires a Mac or PC to use though).

tvOS supports VPN connections directly on the Apple TV. Haven’t tried it myself but I assume you just download the Tailscale app, set it up, and then it should just work.

and correct it in the system

Have you dealt with any large company’s first level support these days? They’re not empowered to do anything in the system in the vast majority of cases (to be clear, this isn’t a dig at support, it’s at the companies that don’t give their staff the tools to actually do their job).

Yes, most people can spot an obvious error, but actually correcting it in the system is usually much more difficult.