How do I save everything on my phone and clear iCloud storage?
Although I am unfamiliar with the workings of parental controls, I would imagine it's possible to access (a part of) the data stored on iCloud Drive via the Files app. It is then possible to move said data to your &quot;On my iPhone&quot; folder, which will save it to your local file system.
As for the other data: Have you asked your parents for help with removing the data from iCloud? They will most likely have to (temporarily) disable your parental controls, after which you should be able to choose what is synced to iCloud. It should then also be possible to delete said data.
On an unrelated note: I would recommend creating a backup of your iPhone to your laptop. However unlikely, iPhones (as all electronic devices) can die unexpectedly. Having a backup is useful in such cases. If you give more information on the &quot;cutoff&quot; as you described, I would be happy to help with that as well.