"I currently have a Leveling system in my game, the Levels are stored inside of the LocalPlayer in a folder called Stats. Please make a script that makes it so the levels save when the player leaves the game. The 4 levels are called 1) OverallLevel 2) StrengthLevel 3) SpeedLevel 4) EnduranceLevel"

-- server script (ServerScriptService) 
local DataStoreService = game:GetService("DataStoreService")
local myDataStore = DataStoreService:GetDataStore("PlayerStats")

game.Players.PlayerRemoving:Connect(function(player)
    local stats = player.Stats
    local dataToSave = {
        OverallLevel = stats.OverallLevel.Value,
        StrengthLevel = stats.StrengthLevel.Value,
        SpeedLevel = stats.SpeedLevel.Value,
        EnduranceLevel = stats.EnduranceLevel.Value
    }
    local success, error = pcall(function()
        myDataStore:SetAsync(tostring(player.UserId), dataToSave)
    end)
    if success then
        print("Data saved for player "..player.Name)
    else
        warn("Failed to save data for player "..player.Name)
        warn(error)
    end
end)

game.Players.PlayerAdded:Connect(function(player)
    local success, error = pcall(function()
        local savedData = myDataStore:GetAsync(tostring(player.UserId))
        if savedData then
            local stats = Instance.new("Folder")
            stats.Name = "Stats"
            stats.Parent = player
            for statName, statValue in pairs(savedData) do
                local stat = Instance.new("IntValue")
                stat.Name = statName
                stat.Value = statValue
                stat.Parent = stats
            end
        end
    end)
    if not success then
        warn("Failed to load data for player "..player.Name)
        warn(error)
    end
end)