the file management in iPadOS is a POS. It wasn't even closer to MacOS Finder level. It still feel like juiced-up iOS without expanding functionalities.
Apple needs to provide an official way to easily transfer file without using iTune & iCloud. Yes, there is unofficial way (VLC) of doing this but it is cumbersome and iPad Files & other apps will not see those files at all. I understand why Apple does this to prevent jailbreaking. But for pete's sake, tablet are not suppose to have a restricted access in file manager since it is a freaking tablet!