It's conveniently hidden where you can't find it.
In you mac, tablet or phone, go to settings.
Then click on your own name on top of the menu. Usually says your name, and Apple ID
A)if you're in a phone, 4th row below your profile picture is "subscriptions". Click on it and go to cancel the ones you don't like
B)if you're in a mac, 5th row is "media and purchases". Click on it.
- A new window will show up, and you'll get two options: mange account or manage subscriptions. Click on "manage subscriptions" button.
- The App store will open, but you'll be redirected immediately to the subscriptions menu, where you can individually choose which ones you want to cancel.
- After that, you'll have to close both, the App store AND the settings window