Parents usually search for this after finding new game icons on the home screen. A child may not even remember the whole path: an ad appeared, a friend mentioned a title, the App Store suggested something, and a few taps later the game was installed.
The practical fix is to treat downloads as a boundary. If a child only needs the phone for learning, video, or a short call, app installation does not need to stay open.
Start with a child-use group. Keep approved apps available, lock games outside agreed times, and limit the App Store and installation path. App deletion and system settings are worth checking too, because one curious tap can create more cleanup later.
iPhone Locker helps parents turn these choices into a repeatable setup. The phone can still be useful to the child, but new games do not casually enter the device.