If you are running Android 11 (and I believe that this will apply for future version too) move at first the android data directory outside the /Android/data directories.
Do not try to use the share function to export anything before having sone that. (I run into severe trouble, doing this, because of problematic situation created by Android/Google, and not by Osmand )
To change the directory where data are stored follow this procedure. Doing this will also move the contents of the Osmand data directory (and subdirectories) to the new directory.
Create the directory where you want to store the data using a file manager
Open Osmand
Go to the main menu
select settings
select the first item: OsmAnd settings - Effective for the entire app
select Data storage folder
scroll down and at the bottom or near the bottom select
Manually specified
and the press at the bottom "Change"
Specify the full path of where you want
If you want to use the same type of memory, but a different directory, the first part of path will be the same.
Keep the part that is before /Android/data (exclude this part) and add the last part of the path
and follow the instruction given.
After you have done the moving you should be able to see the files and directories with any file managers and/or apps.
I think it is better if you do not try to but back the data directory under /Android/data
AnyFile