iPad storage
a large part of my iPad storage says Video, where is this video if all movies and TV shows are on the cloud? Ive removed all attachments, video in Photos is also on iCloud
iPad Pro 12.9-inch, 3rd Gen, Wi-Fi, Cell
You can't directly.
You may need the use of a Mac using the macOS Finder or iTunes or Windows PC using iTunes to un-sync them from your iPad.
If these videos or movies are iTunes purchased or rented movies, you should be able to delete them directly from your iPad in the TV app.
Best of Luck to You!