Running X Appplication Without Desktop Environment in full screen

I'm tryng to configure a Linux to work as a kiosk running google-earth only and I'm just following a guide about how to run google-earth Without Desktop Environment that it would be perfect for me: https://linuxconfig.org/how-to-run-x-applications-without-a-desktop-or-a-wm Basically if i boot in multi-user.target running from a Terminal this command:

xinit google-earth-pro $* -- :0 vt$XDG_VTNR

I'm able to open google-earth-pro but it will not run in full screen, and the actual window seems to be no resizable, even pressing F11. In this workstation there is a NVIDIA Card but the driver are't still installed it could be this the problem?