Am I screwed or nah?

Okay so, basically I played Geometry Dash on phone and was doing so normally... until the game refused to suddenly open due to a bug and so, no matter what I did, the game just closed off everytime I tried to open it.

Now granted, at first they told me to empty the cache memory, which I did and than tried to open it up again... which didn't work.

I'm guessing that mean I'll have to uninstall the game and download it again. But the thing is... the last save file was like... months ago (I couldn't save due to the huge amount of levels i had), which means I'll lost a LOT of data if I load back since it'll connect my account to the last time I saved.

I tried using my Google account to see if it would luckily back-up the whole thing but turns out it doesn't do that for app that aren't affiliated with Google to begin with? (Whatever that means)

So like, is there any way to salvage this so I can keep my current data or am I doomed to lose them?