[CLOSED] leaderstats variables not saving for DataStoreService? [closed]

I've been trying fix this problem of not saving my variables, I'm using 2 variables and I'm also using leaderstats with 2 intValues. I do not know why my data isn't saving. This is server script, and it's in ServerScriptService. The print statement at line 44 works, however, the print statement at line 64 doesn't.

local DSS = game:GetService("DataStoreService")
local mDS = DSS:GetDataStore("MyDataStore") 
game.Players.PlayerAdded:Connect(function(player)
    local key = player.UserId

    local leaderstats = Instance.new("Folder")
    leaderstats.Name = "leaderstats"
    leaderstats.Parent = player

    local wins = Instance.new("IntValue")
    wins.Name = "Wins"
    wins.Parent = leaderstats

    local xp = Instance.new("IntValue")
    xp.Name = "XP"
    xp.Parent = leaderstats

    local data 

    local success, ErrorCode = pcall(function()
        return mDS:GetAsync(tostring(key))
    end)

    if success then
        if data then
            wins.Value = data["Wins"]
            xp.Value = data["XP"]
        end
    else
        warn("Error while saving: "..ErrorCode)
    end 
end)

game.Players.PlayerRemoving:Connect(function(player)
    local key = player.UserId
    local dataTable = { 
        Wins = player.leaderstats.Wins.Value,
        XP = player.leaderstats.XP.Value
    }
    local success, ErrorCode = pcall(function()
        mDS:SetAsync(tostring(key),dataTable)
    end)
    if success then
        print("Data saved!")
    else
        warn("Error while saving: "..ErrorCode)
    end 

end)

game:BindToClose(function(player)
    local key
    for _, v in pairs(game:GetService('Players'):GetPlayers()) do
        key = v.UserId
        local dataTable = {
            Wins = v.leaderstats.Wins.Value,
            XP = v.leaderstats.XP.Value
        }
        spawn(function()
            local success, ErrorCode = pcall(function()
                mDS:SetAsync(tostring(key),dataTable)
            end)
            if success then
                print("Data2 Saved!")
            else
                print("Error While Saving:"..ErrorCode)
            end
        end)
    end
end)

I've tested this both in-game and in studio and they do not work. Also, if possible, how can I change mDS:SetAsync to mDS:UpdateAsync? Any help is appreciated. Edit: I switched to DataStore2 (as recommended by some people and friends) and so far, it actually saved my data. To future people who read this, just because I used DataStore2, doesn't mean you should either. Use either DataStoreService or DataStore2, depending which one is easier. Best of luck, future developers!