can you help me with my Datastore Problem?

onPlayerAdded script

ServerStorage = game:GetService("ServerStorage")
local DataStore = game:GetService("DataStoreService"):GetDataStore("LevelStore")

game.Players.PlayerAdded:connect(function(player)
	local cameraScript = ServerStorage.CameraScript:Clone()
	player:WaitForChild("Backpack")
	cameraScript.Parent = player.Backpack
	cameraScript.Disabled = false
end)


game.Players.PlayerAdded:connect(function(player)
	local levels = Instance.new("IntValue", player)
	levels.Name =  "Levels"
	
	local key = "player-"..player.userId
	local savedValues = DataStore:GetAsync(key)
	
	if savedValues ~= nil then
		--Save format: (levels)
		levels.Value = savedValues[1]
	else
		local valuesToSave = (levels.Value)
		DataStore:SetAsync(key,valuesToSave)
	end
end)

I get an error with this script: 14:37:12.418 - Workspace.onPlayerAdded:21: attempt to index local 'savedValues' (a number value)

onPlayerLeaving script

local DataStore = game:GetService("DataStoreService"):GetDataStore("LevelStore")

game.Players.PlayerLeaving:connect(function(player)
	
	local key = "player-"..player.userId
	local valuesToSave = (player.levels.Value)
	DataStore:SetAsync(key,valuesToSave)	
end)

I got this error: 14:37:11.307 - PlayerLeaving is not a valid member of Players

Please help me fix these errors, thank you.