You can be gambling but not make your mind to think it's free money so that you can plan the profits you made so well that it becomes an addition to your other source of income.
If I think like this too, the money that can be won in the casino is not certain, we cannot delude ourselves that we are going to win an amount X, nor count on that, we can easily lose the money with which we played and thought we were going to win, so these things must be thought about very carefully before playing, but the main thing is not to get ideas about the money that will be "won in the casino" because it is money that is not certain.