Does someone have or know where to find the save file of v8.0? i tried loading it from android to pc but it got corrupted somehow.
There's no repository for save files, but you could ask around the Discord. Very slim chance though that someone would have a save file for, I'm assuming you mean v0.8?
Putting very old saves into a very new update can sometimes have issues, but primarily if they're from a beta or other unfinished version.
Also, it seems JoiPlay has some issue in emulation that renders saves unable to be read by PC, although that's only a problem from v0.12 onward, when JoiPlay was introduced as .apk limits were surpassed.
No idea otherwise, closest I know is I once saw someone's old save file on android had a long string of numbers in the save filename, and simply deleting that extra string in front of the actual "1-20-LT1" etc (page 1, slot 20, in that example) made it work.
If all else fails, a restart is not such a bad thing. Runey remakes old events often, especially these last few updates. Hell, he's remade the intro in 0.14, in fitting with the new hotel exterior design.