ClickDetector help. I need help accessing the player who clicked. ?

I have written this code and it works perfectly

local Debouunce = true
function Recieve()
	if Debouunce == true then
		Debouunce = false	
		script.Parent.BrickColor = BrickColor.Random()
		wait(1)
		Debouunce = true
	end
end

script.Parent.ClickDetector.MouseClick:connect(Recieve)

Can anyone show me how to access a players backpack within the script I need to give them a tool when they click the button, im not sure how to get the player that clicked! :(

Note: The code I wrote for color has nothing to do with the function i want.

Simple. You add a parameter to the function.

local Debouunce = true
function Recieve(plr) -- [[ The parameter "plr" will index whatever set the function to go off..It can be named anything you want, but I don't prefer using numbers. plr is simply an example.. In this case, it's a player clicking the click detector. From here on you could add anything into the the function below using either plr.Backpackpack or plr.Character.Backpack (Not sure which, I haven't used clickdetectors in a while.]]
    if Debouunce == true then
        Debouunce = false   
        script.Parent.BrickColor = BrickColor.Random()
        wait(1)
        Debouunce = true
    end
end

script.Parent.ClickDetector.MouseButton1Down:connect(Recieve) --[[I changed this to MouseButton1Down so it only works with a left click. ]]

local itemname = "Item Name Here"

local item = game.Lighting:findFirstChild(tostring(itemname))
local trigger = script.Parent

enabled = true

function onClick(plyr)

	if plyr.Backpack:findFirstChild(tostring(itemname)) == nil and enabled == true then

		enabled = false

		trigger.BrickColor = BrickColor.new("Black")

		local itemclone = item:clone()
		itemclone.Parent = plyr.Backpack
		
		wait(2)

		enabled = true
		trigger.BrickColor = BrickColor.new("Bright blue")

	end
end

script.Parent.ClickDetector.MouseClick:connect(onClick)

Make sure to put the tool in lighting. I hope this helps. :)