Animation Debounce not creating a cooldown?

So, for the third time, I made a local script that plays an animation when R is pressed, along with a function for debounce, so the animation is not spammable. Here is the animation debounce function, it does not change the value for debounce, but it runs waits according to the parameters. (LocalScript)

local function WaitDebounce(AnimationTrack,DebounceLength)
    repeat wait() until AnimationTrack.IsPlaying == false

    wait(DebounceLength)
end

Now, for the local script that runs the animations:(Same local script as before)

--Humanoid is already defined bc im too lazy to write
local Attack = game.ReplicatedStorage.Attack

local AttackTrack = Humanoid:LoadAnimation(Attack)

local UIS = game:GetService("UserInputService")

local AttackDebounce = false

UIS.InputBegan:Connect(function(Input)
    if Input.KeyCode == Enum.KeyCode.R and AttackDebounce == false then
        AttackTrack.Looped = false

        AttackTrack:Play()

        AttackDebounce = true
        WaitDebounce(AttackTrack,0.5)
        AttackDebounce = false
    end
end)

When I run the scripts, everything works completely fine except for the Debounce. Does anybody have a solution?