Found a cool tool named ScrCpy that can mirror your Android or Ubuntu device:
Have tested it with my Pixel 3a and works well.
Steps:
Install Android Tools: sudo eopkg install android-tools
Install ScrCpy: sudo eopkg install scrcpy
You will need to enable USB Debugging (varies by phone) in the Developer Options of Android and authorise your PC (happens when you enable USB debug and plug in your USB cable).
Edit: Apparently it's in the repo!