Disable On-Screen Keyboard

Stop on-screen keyboard from popping up while typing
You can disable on-screen keyboard by two methods,

From command-line:

# lxc-attach -P /var/lib/waydroid/lxc/ -n waydroid --clear-env pm disable

Going to settings app and selecting Apps & notifications:

Then select App info:
And finally clicking on Android Keyboard (AOSP) entry in the app list:
Clicking on Disable button and confirming in a pop-up dialog will disable on-screen android keyboard from appearing when trying to type.
This will not disable your physical keyboard and you will be able to use it to type.