In the war battles tutorial project, you have some weird rotation on your “map” object. Reset its rotation to 0, 0, 0 and you will be good to go. You should also probably reset its scale to 1, 1, 1.
In the “crash” project, your script never runs, because you never added the script to an object in your collection! The Z position of your “background_go” is at -10, so with the default projection from -1 to 1, it never renders.