"and that the cooldown starts only after 4 punches"

-- local script 
local player = game.Players.LocalPlayer
local character = player.Character
local humanoid = character:FindFirstChild("Humanoid")
local animTrack1 = humanoid:LoadAnimation(anim1)
local animTrack2 = humanoid:LoadAnimation(anim2)

local punching = false
local canPunch = true
local hitCharacters = {}
local punchCount = 0

local function punch()
	if canPunch then
		local arm = character:FindFirstChild(punching and "Left Arm" or "Right Arm")
		arm.Touched:Connect(function(part)
			local otherCharacter = part.Parent
			local otherHumanoid = otherCharacter:FindFirstChildWhichIsA("Humanoid")
			if otherHumanoid and not hitCharacters[otherCharacter] and (animTrack1.IsPlaying or animTrack2.IsPlaying) then
				hitCharacters[otherCharacter] = true
				otherHumanoid:TakeDamage(10)
				wait(1)
				hitCharacters[otherCharacter] = nil
			end
		end)
		punching = not punching
		local animTrack = punching and animTrack1 or animTrack2
		animTrack:Stop()
		animTrack:Play()
		punchCount = punchCount + 1
		if punchCount >= 4 then
			canPunch = false
			wait(2)
			canPunch = true
			punchCount = 0
		end
	end
end

game:GetService("UserInputService").InputBegan:Connect(function(input)
	if input.KeyCode == Enum.KeyCode.E then
		if not animTrack1.IsPlaying and not animTrack2.IsPlaying then
			punch()
		end
	end
end)