Sneaky Apple Auto Charges

After signup, you would have received, on the same day, a subscription confirmation email and a welcome email, at your Apple ID email address. The confirmation email would detail a.o. the duration of the trial (3 months in many regions), trial price ($0 in many regions), regular price after the trial, and what would happen at the end of the trial (auto-renew each month unless you cancel).

At any time the status of your subscriptions is available for review and edits. View, change, or cancel your subscriptions - Apple Support

This is very mainstream across most platforms offering a service, you need to know what you're signing up for.

Gym, Netflix, Apple Music, App subscriptions, ect

They often offer a free trial with the next month automatically being debited out of your account unless you cancel before the end of the billing cycle.

Be mindful of what you subscribe to. Check what subscriptions you're on and cancel any you no longer wish to be apart of. Check out the steps here: https://https://www.apple.com/au/privacy

Lastly, one of the few companies out there that does not sell your information or share it, is Apple. If they did, it would be a breach of their own privacy policy. > https://www.apple.com/au/privacy