Could someone help me make my attack script stop damageing?

Hello,

I have tried to help as far as I can because your script is a mess.

Localscript found in Backpack :

local animation = Instance.new("Animation")
animation.AnimationId = "rbxassetid://873178948" --Convert it into an assetid by putting it into a AnimationId slot.
local player = game.Players.LocalPlayer
local mouse = player:GetMouse()
--local Character = Player.Character -- In studio , everything loads nearly instantly, but on servers there is a delay.
repeat wait() until player.Character -- This creates a loop until the player has fully loaded.
local char = player.Character
local hum = char:findFirstChild("Humanoid")
local animTrack = nil
local CanDamage = true -- Why do you declare both as false and true? 
--The above is a debounce , which prevents the instant death of a Humanoid.


mouse.KeyDown:connect(function(key)
	if key:lower() == "q" then
		--animTrack = char:WaitForChild("Humanoid"):LoadAnimation(animation)
		--animTrack:Play()
    	char["Left Arm"].Touched:Connect(function(hit)
		 	if (hit.Parent:FindFirstChild("Humanoid")) and (hit.Parent.Name ~= player.Name) and (CanDamage == true) then
 				--hit.Parent.Humanoid.Health = hit.Parent.Humanoid.Health -1 -- Too much effort.
 				hit.Parent:findFirstChild("Humanoid"):TakeDamage(1) -- This is the line that damages the Humanoid.
				--If that was what you were searching for.
				CanDamage = false
				wait(1)
				CanDamage = true
 			end
		end)
    end

end)

I am still learning RbxLua.

Thank you for reading.