If lottery, really luck someone who win it. Maybe chance is very small, that is why people usually buy to aim big win like that. If can buy apartment, maybe the prize really big and chance is very small.
The chances to win on the lottery will not too big as we need to see one ticket that will come out as the winner. Even if we bought so many tickets, it doesn't guarantee us to win the ticket because the percentage to be the winner will depends on how good our luck in the lottery game. Usually, the jackpot in the lottery prize will be big money to be a win, so that makes people are trying to win.