Failed to start gdm.service on first boot

I agree...

When you enter your computer BIOS, disable Fast Boot, and Secure Boot. Then save and exit the BIOS.

When you get to the login screen for Zorin OS, click on your name, and a gear :gear: icon will appear. Click on it, and choose Zorin desktop AKA X11/Xorg. Do not choose the Wayland option, thats no good.