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)