Just knowing how to play poker is not enough, and you also have to learn the overall strategy, how to bluff and how to deal with opponents who are bluffing.
And when you are bluffing, try not to do it over and over again and if you do, other players will find out about your plan and realize that you are just bluffing, and you will lose if the other players read you.
play in a relaxed and calm manner so that it is not easy to read when you have a good or bad hand, and if you know someone who is good at poker then it doesn't hurt to ask that person for help or advice.
Good tips!
Another suggestion is to train to play on free platforms, with other players. Of course here, since the money is not real, the players' behavior is different, as they risk more. Either way, after a few hours of playing, you will realize that each person has a different attitude to the game, and that can be a good workout.