Apple Care +

Try this link: How to manage your AppleCare plan - Apple Support

hey, hope you are doing well

here what you need to do to cancel your apple care subscription

1. Go to Settings.=>>Tap on your name to open Apple ID settings=>>Tap on Subscriptions=>>Find AppleCare+ subscription and tap on Cancel Plan button

hope that it would you to chancel your subscription.

thanks :)