Android Question Where are the file/s on my Samsung A31

I have a Samsung A31, with Android 10 and One UI version 2.1.

I have written a program to record information into a sqlite database.
Having tried for a long time (with no success) to access the database in a folder on the phone
that I could see, I followed the instructions re DirAssets and the program now works on the
phone. However, I cannot find the database via MyFiles or an brilliant app called "File Manager".

Does anyone have any suggestions to make?

Thanks in advance.......