Apple Music "Resource Unavailable" after update

I updated to iOS15 and currently my phone says up to date with 15.0.1 and ever since then when I am driving, and go to listen to apple music in the car, it won't play a number of songs. I get a error message "resource unavailable" Originally I thought it was a network thing with my mobile provider but I get this error with full bars and or connected to wifi. I have logged out of my apple id account and logged back in, deleted the app and reinstalled and re-synced all my music... I have worked with 2 apple support chat agents and no troubleshoot resolution. The last big update to 14, apple car play was severely messed up. I couldn't use it for a week.

[Re-Titled by Moderator]