(samsung galaxy s21) gallery empty when accessing through another app

so out of nowhere my gallery just kinda stopped functioning when opened through other apps. like i can't change my twitter profile picture or header because when it brings me to my gallery through the app, it's completely empty. if i go into my files app from my homescreen everything shows up fine, but changing my twitter profile picture is not happening.

i can't find a category for my phone so i just put it in android apps.

Welcome to Android Central! Make sure those apps have permission to access your files/storage. Go to Settings>Apps, select Twitter (or whatever app you want to use), then Permissions, and see what permissions it has there.

Also maybe try reset Twitter by long pressing the icon>tap info>storage clear data then force stop , if happens with more then one app then go settings>apps>reset app preferences