Does android 13 not allow to access your folders? I really don't know, my phone is old. If so, you might have to start anew and your only option is to skip through content you've already played.
I might be able to include a seperate save folder that is persistent across versions in the future, but I can't guarantee it. In the past that feature made it completely impossible to play the game on older phones and I haven't found the perfect solution yet.
Either way, if you can't manually transfer your saves right now, you'll have to wait for future updates or start anew. I don't know any other methods.