Gambling as pure joy, without economic rewards, is basically a game. Those exists, where you can even play for free.
But they are not as addictive and fun as the real gambling, because the game itself really is not that amazing, the entertainment comes with the idea that you might win a lot of money.
If you remove the money part, then it quickly loses its appeal.
But yeah, absolutely you should not think that you can make a fixed amount of money gambling, that is just not how it works, I agree.
In gambling, it’s already good if you managed to end up with a profit, but it’s not worth talking about some kind of guaranteed income. This is not a job where you can get guaranteed pay, a lot depends on various factors, from luck to certain knowledge and the ability to manage emotions. I am sure that even if someone manages to earn money here, it is not a stable income, and it all depends on the gaming budget, but 100 dollars a day is a pretty big win and seems unrealistic to me.
In my opinion, it is mostly likely that it is a huge battle within you and uour emotions since win or lose you'll still be tempted to try again to test your luck, and saying that you are guaranteed for your next turn positively is not something you should expect in gambling. Anything can happen within few turns, and for sure we've all seen people who ruined their careers due to excessive gambling nor warnings saying "gamble what you can afford to lose", but in some cases it is not always that. I've seen neighbors recently getting divorced due to this lifestyle, and although he is not that a regular gambler but he gambled everything in one night losing not only their emergency funds and savings but also their land titles and properties.