Cancel the account. That's the only real signal you can send.
Switch to simply downloading YT content: https://github.com/yt-dlp/yt-dlp
This is what I normally do until the issue is fixed,
List and order of things I try in time/effort. 90% of the time, the issues is fixed once I try 1 or 2.
1. Close the app by swiping way the app. If issue still happening. Log out of the app and log back in.
2. Reboot the Apple TV by going to setting select test Restart.
You can also do this by holding Back button and menu on the remote.
3. Deleting the YouTube app and reinstalling it.
4. Last, factory reset the device.
Let us know if this works. Hopefully this isn’t something YouTube is using to change pricing.