Would I need to make a hitbox to make something for if I step on the part a screenGUI shows?

When I tried, it didn't work. Also, would I need to make a hitbox type of thing? I'm really stumped.

I'm not gonna give you any code, but let me give you instructions so you can learn.

1. No, you don't really need a hitbox, just a part.
2. Set up a basic debounce system, as well as a OnTouched system
3. If debounce is ready, then check the object that hit the "hitbox" for a humanoid
4. This is the only code I will give you pretend "plyr" is the character that touched the object variable.

local players = game.Players
local find = players:FindFirstChild(plyr.Name)
local plygui = find. --I forgot what it was called
--from here on, you can copy/make a gui visible.

I tried this

script.Parent.Touched:Connect(function(hit)
	
	local  debounce = false
	
	if not debounce then 
	
	debounce = true	
		
		print("Brick was touched!")
		
		wait(5)
		
		debounce = false
	
		
		
	end	
		
end)

Part = script.Parent

function onTouch()
	Part.BrickColor = BrickColor.Random()
end

script.Parent.Touched:Connect(onTouch