Did you cancel the trial subscription properly?
Managing auto-renewing subscriptions -
If you want to cancel a subscription from Apple - Apple Support
You might need to scroll down to find the Cancel Subscription button.
Scroll further down the link for instructions for non-Apple devices.
Things about subscriptions;
⁃ Deleting an app does not cancel the subscription.
⁃ A trial subscription must be canceled more than 24 hours before the renewal date or it may renew.
⁃ Many subscriptions are set to renew automatically until you cancel them.
⁃ If you see multiple subscription offers, as long as you don’t select one, the subscription shouldn’t renew.
⁃ If you don’t see Cancel Subscription, the subscription is canceled and won't renew.
⁃ An expiration date means the current subscription has been canceled but is available to use until that date.
⁃ Use Resubscribe/Renew if you change your mind about canceling the subscription.
Final usually means final.
M1 Mac mini, macOS 14.5; Watch, series 7 GPS/cellular, watchOS 10.5; iPhone 12 Pro, iOS 17.5; TV 4th Gen, tvOS 17.5; HomePods, audioOS 17.5 and Airport Express w/ Airplay 2