Why is debounce is not working in this Touched:Connect script?

I am new to scripting, I tried to use debounce in this script, it does not seem to work, why? Also is my spacing/organization/neatness done correctly? Not fully sure how to order them and make the script neat.

script.Parent.Touched:Connect(function(hit)
    local players = game:GetService("Players")  --To get the service of players
    local playerHumanoid = hit.parent:WaitForChild("Humanoid")
    local hitfromPlayer = players:GetPlayerFromCharacter(hit.parent) --Getting the Player from its Character
	local debounce = false
	
	if not debounce then
		debounce = true
	

	    if hitfromPlayer then
	        playerHumanoid.WalkSpeed = playerHumanoid.WalkSpeed + 5
			
		print("work pls")
		wait (5)
		

		debounce = false
		
		end

    end
end)