How to install signed apk on top of original apk (Workaround) (Rooted device/VMOS)
If you can't
install unsigned apk for unknown reason even you patched 3 signature checks,
you can install signed apk on top of original apk to keep your save data intact
So this is
simple step:
Don't
uninstall the original game and install signed APK straight forward
Your save
data will be intact and Google login will still work until you reboot your
device. Some games still logged in as Google even after it doesn't work, but
don't log out because you can't login again until you install original APK
Video tutorial: