Brothers, if you've become a monk, then don't gamble anymore.

Buddhism has the Five Precepts, among which the Shani Precept and the Bhikkhu Precept emphasize not to take chances, not to gamble, and not to cheat.
Gambling can make your greed burn fiercely, cause anger in your heart, create verbal karma, and form bad karma.
Winning leads to arrogance, losing leads to resentment. Your inner peace can never be achieved.
Stay away from contracts.