You can cancel a subscription from Apple or a subscription that you purchased with an app from Apple’s App Store. Here’s how to do it on your iPhone or iPad.
° 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. If there is no Cancel button or you see an expiration message in red text, the subscription is already canceled.
(This how-to is based on my experiences and info on Apple’s support pages.)