Datastore not working properly?

I'm not the most experienced with data store, so something was bound to be wrong, but then when i had issues i looked at a datastore tutorial to find my mistakes () and it seemed like nothing was wrong. Here is the script:

local DSS = game:GetService("DataStoreService")
local DataStore = DSS:GetDataStore("DataStore")
game.Players.PlayerAdded:Connect(function(plr)
    local stats = Instance.new("Folder",plr)
    stats.Name = "leaderstats"

    local Level = Instance.new("IntValue",stats)

    Level.Name = "Level"

    Level.Value = 0


    local Tix = Instance.new("IntValue",stats)

    Tix.Name = "Tix"

    Tix.Value = 0

    print("Hello , "..plr.Name)
    local UsrId = "Player_".. plr.UserId

    local data
    local success, errormsg = pcall(function()
        local data = DataStore:GetAsync(UsrId)
    end)

    if success then
        Tix.Value = data
    end
end)

game.Players.PlayerRemoving:Connect(function(plr)

    local UsrId = "Player_".. plr.UserId

    local data = plr.leaderstats.Tix.Value

    local success, errormsg = pcall(function()
        DataStore:SetAsync(UsrId, data)
    end)
    if success then
        print("Data saved")
    else
        print("Data not saved")
        warn(errormsg)
    end

end)