In terms of accessing Android files
You can access it via shizuku and download Zarchive
And give him access via shizuku
Here you can access the save files
As for the explanations of the application and how it works
You can watch explanations of it on YouTube
Terms of operation of the application
Does not work on some devices that have MIUI interface
Does not work on Android versions 8 and below
sorry if my English is bad, its not my native language