roblox datastore saving

local Data = game:GetService("DataStoreService")
local RunService = game:GetService("RunService")
local XPSaveData = Data:GetDataStore("Experience")

game.Players.PlayerAdded:Connect(function(plr)
    local leaderstats = Instance.new("Folder", plr)
    leaderstats.Name = "leaderstats"

    local Level = Instance.new("IntValue", leaderstats)
    Level.Name = "Level"

    local EXP = Instance.new("IntValue", plr)
    EXP.Name = "EXP"

    local dataEXP
    local dataLVL

    local success, err = pcall(function()
        dataLVL = XPSaveData:GetAsync(plr.UserId.."-Level")
        dataEXP = XPSaveData:GetAsync(plr.UserId.."-EXP")
    end)

    if success then
        Level.Value = dataLVL
        EXP.Value = dataEXP

        print("data retrieved successfully")
    else
        warn("didn't retrieve data properly", err)
    end
end)

game.Players.PlayerRemoving:Connect(function(plr)
    local success, err = pcall(function()
        XPSaveData:SetAsync(plr.UserId.."-Level", plr.leaderstats.Level.Value)
        XPSaveData:SetAsync(plr.UserId.."-EXP", plr.EXP.Value)
    end)

    if success then
        print("player data saved")
    else
        warn("player data didn't save", err)
    end
end)

game:BindToClose(function()
    if RunService:IsStudio() then
        return
    end

    local plrs = game.Players:GetPlayers()

    for i, v in pairs(plrs) do
        local success, err = pcall(function()
            XPSaveData:SetAsync(v.UserId.."-Level", v.leaderstats.Level.Value)
            XPSaveData:SetAsync(v.UserId.."-EXP", v.EXP.Value)
        end)

        if success then
            print("player data saved")
        else
            warn("player data didn't save", err)
        end
    end
end)