Storage Issues

Backup/Reset/Restore your device, review these links:

How to back up your iPhone, iPad, and iPod touch - Apple Support

Restore your iPhone, iPad, or iPod to factory settings - Apple Support

Restore your iPhone, iPad, or iPod touch from a backup - Apple Support

The "Other" category is supposed to house data that does not belong in all of the created categories. That is how things are supposed to be categorized.

It appears that most of your data is stuck in the other category.  I only know of one way to clean up the storage and minimize the "other" category and here is how- (This involves erasing your iPhone and restoring it to factory settings and then restoring from a back up file).

1. Back up your iPhone to a computer as shown here ➔ Back up your iPhone to your computer.
2. Erase your iPhone and restore to factory settings by opening Settings ➔ General ➔ Reset ➔ Erase all content and Settings
3. Restore your iPhone from that back up file on your computer (Step 1) as shown here ➔  Restore your iPhone from a computer back up.

I know that this may turn into a time consuming event and other members of this forum may have other ideas however this is the method that has worked for me.

Axel F.

here is a post that explains what 'other' storage is

What is "Other" and What Can I Do… - Apple Community

We have been seeing issues lately where 'other' storage is expanding. I'm not sure what causes it. It would be great if there was a way to just click a delete button, but it's not that simple.. that button does not exist.

Note that the 5 GB of 'System' space you are seeing is not likely an issue. It it were grown to over 10GB, maybe, but not at 5 GB.

The backup/restore suggested by KiltedTim should take care of the 52 GB of 'Other' storage.

Just wanted to throw that out there in case you do the backup/restore and are still questioning why 'System' is taking space.

Back it up, restore iOS using iTunes, then restore your backup.