GNU/Linux Red Hat 9 Installing Android 9.0 Emulator Guide
The linked tutorial shows you step-by-step How to Install Android 9.0 Pie Emulator Virtual Machine in Red Hat Enterprise GNU+Linux 9 desktop.
And this is the easiest way to dispose for Free of a nicely performing Android 9.0 Emulator on Red Hat Linux for running & testing Android Apps on GNU/Linux.
Android 9.0 Emulator Red Hat Linux 9 VirtualBox VM Setup