It is impossible to say as there are numerous betting systems out there. Some are basic strategies with a few easy-to-follow principles whilst others are much more complex systems requiring you to count cards.
Some experts will swear by the Martingale system, while others are of a different opinion. It all comes down to the size of your bankroll and how much of a risk you are willing to take. Above all, it is essential to keep in mind that no strategy can beat the casino’s house edge and guarantee a win.