Why is the second debounce not working?

The first debounce works. Why is the second debounce not working? So the first debounce is so the NPC takes 25 damage every 0.5 second. The second debounce is suppose to wait 5 seconds before the player gets EXP because when the NPC is dead, and the part touched the NPC again while he is dead, it gives the player more EXP. Is there a way to give the player EXP once when he kills the NPC?

local debounce = false
local debounce2 = false
local player = game.Players.LocalPlayer

function onTouched(hit)
	if not debounce then
		debounce = true
		if hit.Parent.Name:sub(1,17) == "AFK Noob Lv 1 HP " then
			hit.Parent.Humanoid.Health = hit.Parent.Humanoid.Health - 25
			if not debounce2 then
				debounce2 = true
				if hit.Parent.Humanoid.Health == 0 then
					player.leaderstats.EXP.Value = player.leaderstats.EXP.Value + 16
					wait(5)
					debounce2 = false
				end
			end
			wait(0.5)
			debounce = false
			elseif hit.Parent.Name:sub(1,4) == "Noob" then
			hit.Parent.Humanoid.Health = hit.Parent.Humanoid.Health - 25
			wait(0.5)
			debounce = false
		end
    end
end

script.Parent.Touched:connect(onTouched)

The value of debounce2 is only made false again if the condition "hit.Parent.Humanoid.Health==0" return true, otherwise it never gets set so debounce2 is now forever true.

if not debounce2 then
                debounce2 = true
                if hit.Parent.Humanoid.Health == 0 then
                    player.leaderstats.EXP.Value = player.leaderstats.EXP.Value + 16
                    wait(5)
                    debounce2 = false
                end
            end

Consider adding another debounce2=false, possibly in an else statement OR by swapping lines 15 and 16 ("debounce2=false" and the end after it) so the wait is the only thing that delays it.

Happy to help :) CD.