Switch tty sessions from desktop, in my case Ubuntu.
From https://ostechnix.com/how-to-switch-between-ttys-without-using-function-keys-in-linux/
In some Linux editions (Eg. from Ubuntu 17.10 onwards), the login screen now uses virtual console 1. So, you need to press CTRL+ALT+F3 up to CTRL+ALT+F6 for accessing the virtual consoles.
To go back to desktop environment, press CTRL+ALT+F2 or CTRL+ALT+F7 on Ubuntu 17.10 and later.
UTM on Mac defaults to using CTRL+ALT for capture / release of the cursor onto the VM. Under UTM > Settings … there is a check box
Use Command+Option for input capture/release
This will free up the CTRL+ALT to be passed onto the VM.
Finally, default mapping of Function Keys on modern Mac OS is to perform the Functions shown by the iCon on the keys (display light level, spaces, find, etc.), so the Fn Key needs to be pressed as part of the key modification sequence.
Therefore, to get to tty3 Hold Fn+CTRL+ALT Press F3
To Get to the Login GUI Hold Fn+CTRL+ALT Press F1
To Get to the Lock Screen / Current GUI Hold Fn+CTRL+ALT Press F7
I was going nuts, because I logged out and was smashing FnF1 and seeing the Login screen unchanged - What a World.