There are no safe methods to gambling, it's best to stay away from it and not start it. You will lose more than you win if you keep on coming back.
How did you say so? , ofcourse in every gambling website has a safety methods to win , all you need to do is to configure it out on how you will discovered it and make the profit , But the best way to be safe in gambling is not to play nor not to start playing gambling, Why? Once you get addicted then you can't leave the game and you will lose all your money for sure.