Is it possible to spend daily expenditure by gambling money? I think this is not possible. If you play gambling, the loss is more than profit. But yes, many people can play gambling very well and they can earn a lot of profit. But I would say gambling is never a profession. So it is better not to earn money by playing gambling. Gambling should play just for fun. You should not spend your pocket money with gambling money.
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It's possible if you are betting in a game that requires analysis, and chart history, you can make a living with that kind of betting, but if you go for games that involve pure luck, you will have a hard time to do this.