We have said it several times without number on this gambling board that gambling is not for making money. Gambling should only be for fun.
Or let me put it this way. If you want to gamble, either for fun or to make money, do not use more than 1% to 5% of your weekly income on gambling. The recommended percentage is 1% but I do not see 5% affecting me. So if you can not go more than 1% of your weekly income, do not go more than that.
If gambling is taking your money, do not gamble again.
Just to add on what you said, I think it is also imperative to note that we should have a different mindset whenever we gamble.
Instead of viewing gambling as a form of making money, view it as something that gives you anxiety and hope at the same time. Whenever you gamble, allocate a specific percentage of your money and make it a point to NOT use more that you have allocated in order to avoid incurring more expenses in the future.
Like what most have mentioned in several of the boards similar to this, gambling should be kept in moderation. If you overstep your boundaries and lost your sense of control, then expect things to spiral out of control.