I don't think that it is wrong, it is just a simple game
Gambling it's just the game but not simple as you thought , gambling is the game where you deposit your money to get money your back.
Unlike the other games , before you can play gambling you must have funds in your balance in order to play .
For me , gambling isn't wrong , the wrong is the player where they can't control their emotion while playing gambling.
I think there is nothing wrong with gambling, game and gamble its actually almost the same, the different is in game you dont bet anything, in gambling you bet something, so for me its not wrong to gamble as long as you still can control your emotion and you have spare money to spend