How to save tools to DataStore?

I have followed this tutorial on youtube on tools with datastores, and it's not working for me. It just doesn't save my tools when I open up the game. My Code: game.Players.PlayerAdded:Connect(function(player)

	local key = "id-"..player.userId
	pcall(function()
		local tools = DataStore:GetAsync(key)
		if tools then
			for i,v in pairs(tools) do
				local tool = game.ServerStorage.Tools:FindFirstChild(v)
				if tool then
					tool:Clone().Parent = player:WaitForChild("Backpack")
					tool:Clone().Parent = player:WaitForChild("StarterGear")
				end
			end
		end
	end)
end)

game.Players.PlayerRemoving:Connect(function(player)
	local key = "id-"..player.userId
	pcall(function()
		local toolsToSave = {}
		player.Character.Humanoid:UnequipTools()
		for i,v in pairs(player.Backpack:GetChildren()) do
			if v then
				table.insert(toolsToSave,v.Name)
			end
		end
		DataStore:SetAsync(key, toolsToSave)
	end)
end)