Transfer save files

Hello,

My game players often ask how to transfer their save file from one phone to another.
AFAIK GameMaker puts the save files in a folder which cannot be accessed by non-rooted devices (= practically every phone), something like /data/data/com.company.name
I don't really like to reply to my users "sorry, I don't think it's possible"

Is there a way to change this? I don't use microtransactions so I don't care if players can edit or copy the saves.
Is there an app or a process to transfer...

Transfer save files