The first important tip in order to become unbeatable in the game of ping pong is by mastering the different kinds of serves available. You have to consider that merely hitting the ball and getting it to bound from your side of the table to your opponent's side of the table won't cut it. The best serve are serves that will make the ball spin. By putting spins on the ball, you will be able to make it difficult for your opponent to return the ball forcing them to return an easy ball for you to finish it off effectively with a big drive. You also need to know what kind of spin that you should put on the ball when serving.
If you aren't playing, try observing how your opponents play. Try figuring out their weakness and strengths. By doing this, you will be able to know what strategy you need to use when it's your turn to play against them. It is important that you should try knowing what kinds of serves that your opponent delivers in order for you to know how to effectively return the ball.
Being defensive all the time means losing. Try being aggressive all the time by attacking. This will keep your opponent on their toes and will make it difficult for them to beat you. Even if you are winning, you should keep on being aggressive. Being defensive and just hoping that your opponent will make a mistake will quickly turn the table and you could end up on the losing end at a blink of an eye.
In order to become unpredictable, try serving the ball with different spins and lengths. This will confuse your opponents and they won't know what kind of ball you will serve next.
When returning the serve, never expect to return the ball perfectly. As much as possible, learn how to make the playing field even as you return the serve. Never give your opponent the advantage. Always remember that when you return the serve, you need to keep the ball in play in order for you to prepare your strategy.
These are the things that you have to remember in order to become unbeatable in ping pong. By following these tips, you will see that you will be very hard to defeat.