I want to cancel my Apple TV subscription

Do any one of these:

- On any of your Apple devices: How to cancel a subscription from Apple - Apple Support

- On the web: How to cancel Apple TV+ - Apple Support

- On third party devices with the Apple TV app: Manage subscriptions in the Apple TV app - Apple Support

- On a PC with iTunes: Use a Windows PC to cancel subscriptions from Apple - Apple Support

Follow the steps in the support document you posted from. It explains exactly how to cancel.

If you are having an issue with those steps, explain what that is and someone may be able to advise.