Title says it all i really need help srry if i ask too much but in a game this is wht sometimes happens:
i bluff they so they can read me like a book lol
i attack with 1 pill the playe like 3 the over power me by 1 atk.
how do people know wht to do i hardly win its soo frustrating
The best way to predict the opponent's next move is having experience.
It's like in chess. Nobody (except maybe prodigies) is a master on the first or second time playing. Lots of practice, and a lot of losses will make you better, and will help you learn how to predict your opponents next move.
The very best way is lot of experience, so do your hardest, take notes and with enough experience you'll get better and learn how to take a guess what your opponent will do.