None of my third party apk is working

[Maniacscorpio]

How can i downgrade to Android 12.. None of my third party apk is working now.. My office apk is not working also.. How to downgrade to android 12? 

[Barker1323]

I had the same issue with third-party APKs, including Shadow Fight 2. I fixed it by enabling installations from unknown sources in my device settings. This allowed me to install and play Shadow Fight 2 APK  without any problems.