Hello Joey,
We would like to see how we can help with Apple Music not playing. Are these songs purchased from the iTunes Store, or are they a part of your Apple Music membership? If it is from your membership, check your subscription for any issues with these steps: See or cancel your subscriptions
Do you have the same issue when connected to a Wi-Fi connection? Please back up and update to our latest iOS, 14.2, if you have not already. The steps in this link will walk you through the process: Update your iPhone, iPad or iPod Touch
Get back to us with your results and we can go from there.
Cheers!