Hi @0547, welcome to our forum!
To move an application back to the internal storage of your phone from the SD card, you have to go to Settings > Apps > name of the application that you want to move > Storage > tap on "Internal storage" and wait for the application to be moved back again.
You will have to do this manually for all applications that you have moved to your SD card and that you want to move back to the internal storage again.
I hope that helps!
