My friend makes money online through investments. This is less risky than casinos or cash games, so I advise you to think about those investments that will definitely bring you a profit. I know that bitcoin has begun to fall in price, so my friend found the best rates on hiribi.com
and sold his bitcoins more expensive than he bought them. When the price of bitcoin drops sharply, he will again buy this cryptocurrency in order to sell it when the price for it rises. It takes some time, but you get a good profit from it and practically don't risk your money, because all experienced traders predict that Bitcoin will rise again in price soon.