Android get output file by USB

[Vlados]

Good day!
I would like to create output file, that users can get this file via USB. (all devices including devices without sdcard)
First of all, file was created in /storage/emulated/0. I can't get this directory via USB
Secondly, if I touch to update in "Files"

I can see this file via USB. (I think that it move from emulated storage)


If i change existing file, changes don't apply. I must repeat the previous steps

How can I create output file on device without external storage?