Why do I double jump when I hold spacebar?

Sorry the script is so long but I really need help. This script works almost perfectly apart from the fact that you can double jump just by holding spacebar, its really annoying and I dont know how to fix this since you're meant to have to double tap the spacebar to perform a double jump. If you need anymore information please please comment.

Theres an article about this script here

Thank you in advance.

local UserInputService = game:GetService("UserInputService")
 
local LocalPlayer = game:GetService("Players").LocalPlayer
local Character
local Humanoid
 
local DoubleJump = false
local Debounce = false
 
UserInputService.JumpRequest:connect(function()
	if not Character or not Humanoid or not Character:IsDescendantOf(workspace) or Humanoid:GetState() == Enum.HumanoidStateType.Dead then
		return
	end
 
	if not Debounce then
		Debounce = true
 
		if not DoubleJump and Humanoid:GetState() == Enum.HumanoidStateType.Freefall then
			local torso = Character:FindFirstChild("Torso")
 
			if torso then
				torso.Velocity = Vector3.new(torso.Velocity.X, Humanoid.JumpPower * 1.5, torso.Velocity.Z)
				DoubleJump = true
			end
		end
 
		wait(0.3)
		Debounce = false
	end
	wait(5)
end)
 
local function CharacterAdded(char)
	Character = char
	Humanoid = char:WaitForChild("Humanoid")
 
	Humanoid.StateChanged:connect(function(_, new)
		if new == Enum.HumanoidStateType.Landed then
			DoubleJump = false
		end
	end)
 
	Humanoid.Died:connect(function()
		DoubleJump = false
	end)
end
 
if LocalPlayer.Character then
	CharacterAdded(LocalPlayer.Character)
end
 
LocalPlayer.CharacterAdded:connect(CharacterAdded)