Open "Settings"

Access your Apple/iCloud account by selecting your profile at the top of the page

Select "Subscriptions"

Under "Active", select the subscription you would like to cancel

Select "Cancel Subscription" at the bottom of the page

Finalize the cancellation by selecting "Confirm"

Open "System Preferences"

Select "Apple ID"

Select "Media & Purchases"

Next to "Subscriptions", select "Manage" (this will open the App Store)

Find the subscription you would like to cancel and select "Edit"

Select "Cancel Free Trial" or "Cancel Subscription"

Finalize the cancellation by selecting "Confirm"