Hi and welcome to the forum
Sadly using an SD card as internal precipitates many problems
Can you move all your personal data to an external source and reformat the SD card as portable?
First try to delete some content to make space, but then don’t save a screen shot.
To make space ensure the image/video bin is emptied and go to each app and Clear the storage and cache. It’s a bit of a labour for ## apps
Appended are Screenshots to show memory usage before and after clearing storage and cache. The image and video bin had already been emptied
