Keyboard shortcut switch to space
I'm afraid this is one of those features that was just really badly thought-through from the outset, when the new fullscreen paradigm was added, &amp; hasn't been fixed yet.


You can only use key commands to go directly to numbered Spaces.
Fullscreen Spaces don't have a number.
Catch 22


Best you can do is use the number keys to get to the last numbered Space, then  Ctrl ⌃   →  to get to the fullscreen Space you require.

Yet another reason I never use fullscreen.

BTW, according to your Shortcuts picture, you only have one Space set up. The  Ctrl ⌃   [num]  shortcuts are added automatically [but not activated by default] as you add each potential Space.



Compared to my 7...



Safari full-screened to the right, as an example. Spaces have numbers, fullscreens have names.