My datastore script does not work for unknown reason, I get no errors?

local dataStoreService = game:GetService("DataStoreService")
local playerData = dataStoreService:GetDataStore("PlayerData")

game.Players.PlayerAdded:Connect(function(player)
	
	local leaderstats = Instance.new("Folder")
	leaderstats.Name = "leaderstats"
	leaderstats.Parent = player
	local kills = Instance.new("IntValue")
	kills.Parent = leaderstats
	kills.Name = "Kills"
	
	local Experience = Instance.new("StringValue")
	Experience.Parent = leaderstats
	Experience.Name = "Experience"

	
	local SurvivalTime = Instance.new("IntValue")
	SurvivalTime.Parent = leaderstats
	SurvivalTime.Name = "Survived"
	
	local Money = Instance.new("IntValue")
	Money.Parent = leaderstats
 	Money.Name = "BackDollars"	
	
	player.CharacterAdded:Connect(function(character)
		local humanoid = character:FindFirstChild("Humanoid")

			humanoid.Died:Connect(function(died)
				local tag = humanoid:FindFirstChild("creator")
				local killer = tag.Value
				if tag and killer	then
					killer.leaderstats:FindFirstChild("Kills").Value = killer.leaderstats:FindFirstChild("Kills").Value + 1
					killer.leaderstats:FindFirstChild("BackDollars").Value += 1
				end
			end)
	end)
	local playerUserId = "Player_"..player.UserId
	
	local data = playerData:GetAsync(playerUserId)
	if data then
		kills.Value = data["Kills"]
		Experience.Value = data["Experience"]
		SurvivalTime.Value = data["Survived"]
		Money.Value = data["BackDollars"]
	else
		kills.Value = 0
		Experience.Value = "Newcomer"
		SurvivalTime.Value = 0
		Money.Value = 0
		print("datastore")
	end
end)

local function create_table(player)
	local player_stats = {}
	for i, stat in pairs(player.leaderstats:GetChildren()) do
		player_stats[stat.Name] = stat.Value
	end
	return player_stats
end

local function SaveData(player)
	local player_stats = create_table(player)
	local success, err = pcall(function()
		local playerUserId = "Player_"..player.UserId
		playerData:SetAsync(playerUserId, player_stats)
		
	end)
	
	if not success then
		warn("Could not save data")
	end
end
function SaveAllData()
	for _,player in pairs(game.Players:GetPlayers()) do
		SaveData(player)
	end
end
game:BindToClose(function()
	SaveAllData()
end)

while true do
	SaveAllData()
	wait(60)
end
--game.Players.PlayerRemoving:Connect(onPlayerExit)

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