System cache and log clear
How to clear the system used cache and logs to increase the storage on my iPad
iPad, iPadOS 14
Question marked as
See >>> Clear the history and cookies from Safari on your iPhone, iPad, or iPod touch - Apple Support
If your internal storage is full, your only option is to better manage the storage that you have - and delete unused Apps or unneeded data.
These support pages should prove to be helpful:
What's the difference between device storage and iCloud storage? – Apple Support
Manage your iCloud storage – Apple Support
How to check the storage on your iPhone, iPad and iPod touch – Apple Support
Clear Other storage on your iPhone or iPad - Apple Support