My iPad storage is full. How do I clear other?

If you have a Mac or PC, I suggest the following:

1) Make a full backup of your iPad to iTunes or Finder.

2) On your iPad, go to Settings > General > Reset > Erase All Content and Settings.

3) Restore your iPad from the backup.

https://support.apple.com/en-us/HT203977

See this.

Clear Other storage on your iPhone or iPad - Apple Support