no, i don't think that it coul be wrong, it's just hobby, why should it be wrong, of course you can,and probably loose some money, but you will win sometimes too, and if you're very lucky then maybe you wins will be more than loses
Gambling could be wrong once you have a big lost, you lend money bigger to your friends instead to cover your previous big lost you just get another big lost in the end ruin your life and people around you.
And mostly gambler have a lost results than win, so I can say gambling are wrong for loser.