How to put tool on the player's head?

Hello! I would like to know what is wrong in my code, I want the night vision tool to appear in the player's head, how can I do that?

local tool = script.Parent
local equipped = false
local UID = game:GetService("UserInputService")

local player = game.Players.LocalPlayer
local char = player.Character
tool = char.Head.CFrame


tool.Equipped:Connect(function()
	equipped = true
end)

tool.Unequipped:Connect(function()
	equipped = false
end)

local isActivated = false

UID.InputBegan:Connect(function(key,isTyping)
	if equipped == true then
		print("tool equipped")
		if key.KeyCode == Enum.KeyCode.N then
			isActivated = not isActivated
			if (isActivated) then
				pcall(function()
					local StarterGui = game:GetService("StarterGui")
					StarterGui:SetCore("TopbarEnabled", false)
					
					
				end)

				local frame = game:GetService("Players").LocalPlayer.PlayerGui
				print("Activated.")
				-- Config 1
				wait(.1)
				frame.Screen:FindFirstChild("NightConfig").BackgroundTransparency = 0.1
				wait(.1)
				frame.Screen:FindFirstChild("NightConfig").BackgroundTransparency = 0.15
				-- Config 2
				wait(.1)
				frame.Screen:FindFirstChild("NightConfig").BackgroundTransparency = 0.25
				wait(.1)
				frame.Screen:FindFirstChild("NightConfig").BackgroundTransparency = 0.4
				wait(.1)
				frame.Screen:FindFirstChild("NightConfig").BackgroundTransparency = 0.6	
			else	
				pcall(function()
					local StarterGui = game:GetService("StarterGui")
					StarterGui:SetCore("TopbarEnabled", true)
				end)
				local frame = game:GetService("Players").LocalPlayer.PlayerGui
				frame.Screen:FindFirstChild("NightConfig").BackgroundTransparency = 1
				print("no activated.")
			end
		end
	end
end)

Ok, to start you don't need to use user input service when you're using activated because that automatically detects when the tool is equipped and when it is left-clicked (however if you want other inputs with your tool you should still use User Input Service.) Also is this a server or local script, because you cant use things like ".LocalPlayer" on server scripts so that could be part of your problem.