How to disable the space bar temporarily after jumping?

I want to add a denounce to the space bar when the player jumps, and disable it temporarily. The problem is, I don't know how to do this. Here is my failed attempt.

local character = script.Parent
 
local JUMP_DEBOUNCE = 5
 
local humanoid = character:WaitForChild("Humanoid")
 
local isJumping = false
humanoid.StateChanged:Connect(function(oldState, newState)
	if newState == Enum.HumanoidStateType.Jumping then
		if not isJumping then
			isJumping = true
			humanoid:SetStateEnabled(Enum.HumanoidStateType.Jumping and Enum.KeyCode.Space, false)
		end
	elseif newState == Enum.HumanoidStateType.Landed then
		if isJumping then
			isJumping = false
			wait(JUMP_DEBOUNCE)
			humanoid:SetStateEnabled(Enum.HumanoidStateType.Jumping, true)
		end
	end
end)

-- Variables --
local character = script.Parent
local humanoid = character:WaitForChild("Humanoid")
local isJumping = false
local UserInputService = game:GetService("UserInputService")
local DisablingJumpingTime = 5

-- Script --

humanoid.StateChanged:Connect(function(oldState, newState)
	if newState == Enum.HumanoidStateType.Jumping then
		if not isJumping then
			isJumping = true
			wait() -- dont know why, but this wait() fixes it
			humanoid.JumpPower = 0 -- Instead of disabling the jumping, you can change the JumpPower to 0 instead!
		end
	elseif newState == Enum.HumanoidStateType.Landed then
		if isJumping then
			isJumping = false
			wait(DisablingJumpingTime)
			humanoid.JumpPower = 50
		end
	end
end)