Please follow the instructions given below on your device to stop the auto-renewal of your subscription:
- Go to "Settings" on your iOS device
- Tap on your name
- Tap on "Subscriptions"
- Tap on the subscription that you want to manage
- Tap on "Cancel subscription"
You can also visit the link below to know the steps involved in cancelling the renewal of your subscription:
https://support.apple.com/en-us/HT202039