I have multiple video series in different folders.
Need a video player with tracking feature - remember which video last played.
Almost got it : the great VLC has it. https://www.vlchelp.com/grouping-listing-video-orientation-android/
Still, I am looking for other apps…
I use a file browser that also plays audio and video: Total Commander
It “remembers” recent playlist and play point of the file, as long as I don’t click the red ‘X’ in the controls.
It’s not on F-droid, but it’s possible to add its repository to F-droid.