I'm wondering if someone can help me on how to evoke Mission Control and immediately show desktop preview. It's a feature from BetterTouchTool, but I'm trying to mimic it in KM.
As @Frankb mentioned, if you want to see the various Mission Control Desktop Spaces you need to move the mouse to the top of the screen (either before or after pressing Right Shift).
Another method is to configure a Hot Corner and use the following macro.
Macros are always disabled when imported into the Keyboard Maestro Editor.
The user must ensure the macro is enabled.
The user must also ensure the macro's parent macro-group is enabled.
System Information
macOS 13.4 (22F66)
Keyboard Maestro v10.2
Note, in general, to prevent accidental activation, I prefer to define my Hot Corners with a modifier (e.g., with ⌥ Put Display to Sleep and ⌥ Desktop), but when I tried that with Mission Control, I was unable to activate it with the above shortcut modified to include a Press and Hold Option Modifier and short Pause before the mouse move.