How to cancel a subscription
on your iPhone or iPad  [iOS]

• Open the Settings app.

• Tap your name.

• Tap Subscriptions.

• Tap the subscription.

• Tap Cancel Subscription. You might need to scroll down to find the Cancel Subscription button.

Apple Support Link - https://support.apple.com/en-us/HT202039

The only subscriptions you can cancel on your Apple devices are those that you signed up for through the App Store using your Apple ID. If you're unable to cancel your subscription via your iPhone, iPad or Mac, you will likely need to cancel through the company's website, app, or customer service phone line.