My sd card is not connecting to my Android phone
The information provided is less.. so I'm assuming that the sd card is detected and is working and.. you're trying to download apps from google play store..
Lemme explain... The apps downloaded are automatically stored in your internal storage so even if you sd card has space available it won't be used.
What you can do for this..
try to delete useless stuffs and free up space from your internal storage (I'd recommend you to download Files by Google for this)
and copy all the videos from your internal storage to the sd card..
HOPE IT HELPS.. (^_^)