I played this game from a while back, I'm just starting to get back to it. How do I update my game so that I keep my saves? (last version I played was the 2024 June 03 version). Initially, I wanted to use the usual method wherein I copy the save file to a new folder and then transfer it after installing the new version. But the saves are no where to be found in the data files even though I can play the game in my last save with no issues. What do I do?

Updating on android works by installing the newer .apk. It automatically updates the game to the new version, after which you can continue the progress of your saves without having to move them at any point. 
The saves on android aren't in public folders, and can't be seen and accessed by normal means.