If you think in the future maybe you can save when you have suffered a lot of defeat and you want to do it again. So if there is a defeat when playing gambling and you want to save money then after you experience defeat don't play again and leave for a while. That's the way to save money for playing gambling games.
In gambling you cannot save your money however you can reduce the bets that will not let you lose more. There is no point in putting your money on the line and still you are expecting save money. Both gambling and your thoughts do not match that will result in nothing. It reflects that you are confused then what is the need to start gambling. You have other sources to invest and to save your money.
Why not ? What about those succesful gamblers that are now millionaires/billionaire ? They reach their succes because they are wise enough . Once they win they save that winnings and they only play gambling the other day ,rinse and repeat until you already save alot of cash . reducing your bets like what you said is also a good idea to save up because this lessen the risk of loosing big .