I need help fixing this combat script. The knockback applies too fast. Can anyone help me?

The knockback is applied too fast and I don't know how t fix it. Whenever the 4th punch hits, it applies knockback, instead of the 5th.

debounce = false combo = 1

script.Parent.OnServerEvent:Connect(function(player, action) local character = player.Character if debounce then return end

if action == "combat" then
	debounce = true
	if combo == 1 then
		combo = 2
		local rightPunch = character.Humanoid:LoadAnimation(script.rightPunch)
		rightPunch:Play()
	elseif combo == 2 then
		combo = 3
		local leftPunch = character.Humanoid:LoadAnimation(script.leftPunch)
		leftPunch:Play()
	elseif combo == 3 then
		combo = 4
		local rightUppercut = character.Humanoid:LoadAnimation(script.rightUppercut)
		rightUppercut:Play()
	elseif combo == 4 then
		combo = 5
		local leftUppercut = character.Humanoid:LoadAnimation(script.leftUppercut)
		leftUppercut:Play()
	elseif combo == 5 then
		combo = 1
		local spinKick = character.Humanoid:LoadAnimation(script.spinKick)
		spinKick:Play()
	end
	wait(0.2)
	local ray = Ray.new(character.HumanoidRootPart.Position, character.HumanoidRootPart.CFrame.lookVector * 8)
	local calcRay = workspace:FindPartOnRay(ray, character)
	if calcRay then
		if calcRay.Parent:FindFirstChild("Humanoid") and calcRay.Parent ~= character then
			calcRay.Parent.Humanoid:TakeDamage(5)
			local hitSound = script.hitSound:Clone()
			hitSound.Parent = calcRay
			hitSound:Play()
			if combo == 5 then
				local bodyVelocity = Instance.new("BodyVelocity", calcRay)
				bodyVelocity.MaxForce = Vector3.new(25000, 25000, 25000)
				bodyVelocity.Velocity = character.HumanoidRootPart.CFrame.lookVector * 20
				game.Debris:AddItem(bodyVelocity, 0.3)
			end
		end
	end
	wait(0.25)
	debounce = false
end

end)