Control Right/Left Arrow doesn't work in Mission Control (Catalina)
I'm trying to set up Mission Control for multiple desktops, a feature I just discovered and love, but I can't get the shortcut Control + right arrow or left arrow to move between desktops. I've tried lots of things but nothing seems to resolve the issue. At the moment, I've disabled "move left a space" and "move right a space" in keyboard preferences but that has had no impact.
The shortcuts "Switch to Desktop 1, 2, 3, etc. are supposed to work with Control +1, 2, 3, etc. are enabled, but they don't work either.
I've searched in vain for tutorials on how to enable Control + Right Arrow (Left Arrow). Any suggestions? Thanks!
iMac 27″, macOS 10.15