Gallery seems to work more closely to a viewer only now; some features which did not seem to work nicely on all devices may have been dropped.
Perhaps I was too terse with my explanation, I’ll try again 
Using Files app create a new folder in any location; try to find a location which is easy to navigate back to.
Name the folder My_next_Album
Look for your My_next_Album using Gallery – the folder, empty of any image, will not be found.
Using Files App move at least one image into My_next_Album.
Now Gallery should now see My_next_Album.
Note in Files app, pull down Navigation side bar from 3 bar menu top left. Only the circled items lead to “old school” navigation.
A fairly recent bug ! Two posts, further comments within the threads: