Random or system, my luck is about the same.
However, for Daily 3 lottery with 000-999, sometimes I notice patterns which seem to help put the odds more in my favor for box bets.
Sometimes there is a certain digit or pair of digits that are just really hot over a draw period, so basing picks upon those sometimes pays off within a handful of draws for a box bet.
Anyway, if you want random lottery number picks, try these web pages:
http://crazynuts.hollosite.com/pick_lottery_numbers/
http://crazynuts.hollosite.com/megamillions_lottery_picks/