How do I cancel Apple Music?

See the following from the support article in my previous post:

How to cancel a subscription on your iPhone or iPad

1. Open the Settings app.
2. Tap your name.
3. Tap Subscriptions.
4. 
5. 
   
6. Tap the subscription.
7. Tap Cancel Subscription. You might need to scroll down to find the Cancel Subscription button. If there is no Cancel button or you see an expiration message in red text, the subscription is already canceled.

If you can't find the subscription that you want to cancel

There is an Apple article that explains how to cancel subscriptions. Click on the following link: If you want to cancel a subscription from Apple - Apple Support