can't locate files in android and can't save modified files

[fatsen]

Describe the bug
files are saved at "/storage/emulated/0" by default. I can get files from github and open it with other editors, but after saving files using other editors, the modified part can't be shown in MGit repo. And I can't find files at the location "/storage/emulated/0".

Expected behavior
files modified by other editors can be shown in MGit repo. And MGit repo on the phone can be located using the android file browser.

Smartphone (please complete the following information):

• Device: [Redmi K40 Pro+]
• OS: [Android 13]
• App Version [1.6.2]