iPad Pro storage

Hello everyone! I have a problem with my 256gb ipad pro storage. My Files app is pretty empty, I had a lot of movies but I already deleted them to free storage and now I barely have some photos, docs etc... only 18Gb. But then the ipad is still full like I never deleted anything, and it says the App Files it’s 188Gb wtf! I got in the app and I have nothing, it’s empty, only with some Gb of storage taken but ipad still says it’s 188Gb taken, it’s like it didn’t notice I deleted almost everything. T_T

How can I fix this? Thank you!