Users/myuser/.expo/bin/, copy adb in platform-tools, paste and replace the adb in expo. No terminal command, just use Finder to open /Users/myuser/Library/Android/sdk/platform-tools folder and Instead, I copy the platform-tools adb file to overwrite the expo adb. Adding platform-tool adb path didn't work probably because usr/local/bin is always in the $PATH. So I made the conclusion, expo was using a bad adb.

To verify it, I ran /Users/myuser/Library/Android/sdk/platform-tools adb devices, it gave me the ip and port of my virtual android device. I went to /Users/myuser/Library/Android/sdk/platform-tools folder, there was an adb file! This platform-tools adb is apparently what I should use. I have the virtual machine on, but it gave me nothing. I was pretty sure this expo adb was the criminal all the time. That shortcut points to /Users/myuser/.expo/bin/adb. I went to usr/local/bin and found a shortcut for adb. I typed which adb under the project folder, it showed usr/local/bin/adb. I tried to add export PATH=/Users/myuser/Library/Android/sdk/platform-tools:$PATH and export PATH=/Users/myuser/Library/Android/sdk/tools:$PATH and then source ~/.bash_profile in my project folder. I magically had some other adb in Expo folder, I replaced it with Android SDK adb to remove the last obstacle.

I am using Android SDK adb on Android Studio, Expo and Genymotion now. I struggled several hours to make it work.

Expo xde mac emulator