you are using it wrong, you can only moonjump if you are already in Air (Above Ground level)
example jump from a ledge or make a button combo to make the moonjump active after a jump
activate Khuong;s [#5 jump] cheat combined with it
also if you get the drop down animation like the video shows, you have more control for direction
[#06. Hold ZR+(X) MoonJump (Gamerjin-Khuong)]
58000000 04642D88
58001000 000000C8
58001000 00000178
58001000 00000030
78000000 000000FC
80000204
64000000 00000000 41200000
20000000
[Hold ZR+X] fly high then press R to dive then go back to holding ZR+X, you will be in the dive with open arms animation
If you have a Bow Equipped, i suggest to drop it or use another button combo
or
replace 80000204 with 80000004 and use Moonjump with X button only
looking forward to TomSwitch Hover mode!