How would I make all scripts I made that work in studio, work in play mode?

Heres an example I made which wouldn't work in play mode. Am I doing everything wrong? Most of my scripts don't work in play mode.

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local user = game.Players.LocalPlayer -- the player
local character = user.Character -- the character
local Tool = script.Parent -- script.parent >:o
local reload = 3 -- reload time between each drink
local debounce = true -- no touchy
local oneuse = false-- if its a one-use item
	local timebeforefinish = 3
-----------------------------------------------
function activated()
	if not Tool.Enabled  then
		return
	end
	if debounce == true then
		local anim = character.Humanoid:LoadAnimation(Tool.drink)
		anim:Play()
		debounce = false
		Tool.Handle.gulp:play() -- drink sound
		wait(2)
		character.Humanoid.Health = character.Humanoid.Health + 50
		--- nope ---
		if oneuse == true then
			onusee()
		else
		wait(reload)
		debounce=true
		end
	end
end

function equip()
	Tool.Handle.equip:play() 
end

function unequip()
								
end
function onusee()
	wait(2)
	Tool:Destroy()
end
Tool.Activated:connect(activated)
Tool.Equipped:connect(equip)
Tool.Unequipped:connect(unequip)