Data not loading?! (It works fine besides it not loading)

The data script below works all well but refuses to load. It doesn't show any errors in output! Any idea whats going on? lmk thx

The issue is that the data wont load correctly! pls help

local data = require(script.DataModule)

local DSS = game:GetService("DataStoreService")
local statSave = DSS:GetDataStore("stats_Test2020")
local settingSave = DSS:GetDataStore("settings_Test2020")
local careerSave = DSS:GetDataStore("careers_Test2020")

--ughh its not working

game.Players.PlayerAdded:Connect(function(player)
    local key = "Data-ID"..player.UserId

    local statData = statSave:GetAsync(key)
    local settingData = settingSave:GetAsync(key)
    local careerData = careerSave:GetAsync(key)

    local StatsFolder = Instance.new("Folder", player)
    local SettingsFolder = Instance.new("Folder", player)
    local CareersFolder = Instance.new("Folder", player)

    StatsFolder.Name = "leaderstats"
    SettingsFolder.Name = "Settings"
    CareersFolder.Name = "Careers"

    -----

    for i,stats in pairs(data["Stats"]) do
        local thing = Instance.new("IntValue", StatsFolder) 
        thing.Name = tostring(stats)
        thing.Value = 0
    end
    for i,setting in pairs(data["Settings"]) do
        local thing = Instance.new("BoolValue", SettingsFolder)
        thing.Name = tostring(setting)
    end
    for i,career in pairs(data["Careers"]) do
        local thing = Instance.new("BoolValue", CareersFolder)
        thing.Name = tostring(career)
    end

    if statData then
        for i,v in pairs(StatsFolder:GetChildren()) do
            v.Value = statData[i]
        end
    else
        local StatTable = {}

        for i,v in pairs(StatsFolder:GetChildren()) do
            table.insert(StatTable, v.Value)
        end

        statSave:SetAsync(key, StatTable)
    end

    if settingData then
        for i,v in pairs(SettingsFolder:GetChildren()) do
            v.Value = settingData[i]
        end
    else
        local SettingsTable = {}

        for i,v in pairs(SettingsFolder:GetChildren()) do
            table.insert(SettingsTable, v.Value)
        end

        settingSave:SetAsync(key, SettingsTable)
    end

    if careerData then
        for i,v in pairs(CareersFolder:GetChildren()) do
            v.Value = careerData[i]
        end
    else
        local CareersTable = {}

        for i,v in pairs(CareersFolder:GetChildren()) do
            table.insert(CareersTable, v.Value)
        end

        settingSave:SetAsync(key, CareersTable)
    end
end)

game.Players.PlayerRemoving:Connect(function(player)
    local key = "Data-ID"..player.UserId
    local Stats = player.leaderstats
    local Settings = player.Settings
    local Careers = player.Careers

    local statsTable = {}
    local settingsTable = {}
    local careersTable = {}

    for i,v in pairs(Stats:GetChildren()) do
        table.insert(statsTable, v.Value)
    end
    for i,v in pairs(Settings:GetChildren()) do
        table.insert(settingsTable, v.Value)
    end
    for i,v in pairs(Careers:GetChildren()) do
        table.insert(careersTable, v.Value)
    end

    statSave:SetAsync(key, statsTable)
    settingSave:SetAsync(key, settingsTable)
    careerSave:SetAsync(key, careersTable)
end)