Allow to save / download file outside of application folder

Hello,

When I go into settings to change the data storage filder, I'm stuck with /storage/emulated/0/Android/ as a base path. There is 3 options at this point but none of these are outside that space. Problem is I cannot access these path with apps like music app, most of them only see the musics folder under /storage/emulated/0/Musics.

My idea would to have a download option that either request where to save the file or use another download place, a bit like google drive does. Google drive sync the file in it's own folder when you open them or use the "always available offline" option, but when you download, they put the files under downloads folder. At least if they were there, I could have them move easily.

The goal is to be able to download music from nextcloud and play them in my music software. The nextcloud app isn't really good for music playing.

Thank you!

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