I miss Mod + {1..n} when using macOS!! I know they do allow workspace switching via keyboard shortcuts. But the minute you full screen an app, that breaks. Full screened apps are taken out of the desktop workflow. So even though a three-finger swipe can move between a full-screen app and a desktop, keyboard shortcuts cannot.
Coming from i3 this was one of my biggest pain on osx, running skhd + yabai to solve that. Still not i3's perfect experience: I did not manage to have only one action key, but starting to get closer. And you can have that full screen without the osx full screen!