For those looking for a direct APK-based rooting method, several tools are specifically optimized for Android Pie: Kingo Root, the king root android app for free.
Rooting your Android 9.0 (Pie) device using an APK is one of the most convenient ways to gain administrative control without needing a computer or advanced technical knowledge. While newer versions of Android have tightened security, Android 9 remains highly compatible with several "one-click" root solutions. root apk android 9