How can I play SWGOH on Linux

Android engineer here.

This has always been a tricky matter with emulators, which is why most of us do testing on real devices.

Generally, you need an emulator with google services and play services enabled and working. Check this link as it might help a bit

https://stackoverflow.com/questions/14536595/how-to-download-google-play-services-in-an-android-emulator

Edit: do note that ARM images will run much slower, and x86 ones might be incompatible with the game/APK