In order to avoid those feelings of regret setting a budget is a must, after all if you determined beforehand how much money you are willing to spend gambling and the amount that you do indeed spent is at that level or below then there is nothing to regret as everything is going according to your plan, however this can be difficult to do, especially if you have never tried using a budget before, but given enough time this will become second nature to you and those feelings will disappear.
of course with a small amount. because sometimes someone who has planned a budget for gambling but with a slightly large amount will still have a feeling of regret after losing and losing all of his budget. so this plan must always be minimized to a very small amount so as not to cause regret.
after that, don't go to gambling too often because even with a small budget but always going to gambling every day you will definitely regret it because it will count all your losses in a few days.
but at the core of all these problems the most important thing is to always learn to control yourself and be responsible for all the bets that have been determined.