trashaccount i use a second profile for the music app and have a all ways on vpn. I restricted the app in battery settings so the app can't turn on by its self. So if i have forget to turn off wifi in the first user, it cant get access. Beside that the profile has all exploited protection on maximum.
The app also has no permissions granted and works well. So i guess all is right.
For games i have a nother profile with the same setup.