I don't know what "Grid" means, I assume that is something like Icon View? I've never used that view...

No wonder you can't see the "View" menu! You've got your Mac running in French! Well,
there's your problem!!
Oh wait! I do see what you are talking about!

However, when you click on your Desktop, you probably
will be in Finder. However, there will still be a "View" or "Présentation" menu and near the bottom is an item called "View Options"
⌘ J. You will have to translate that to french yourself. "Voir les options"? In the little window that pops up, you can adjust the grid spacing, etc.