how to manipulate???

For me as an INFP it comes naturally; I am gifted at reading people without having to try. I notice details such as facial expressions, the way they talk, look, dress, the things they say, the vibe they give off, etc. Not everyone is born with this gift but I believe it may be learned through observation and enough intuition. If you struggle identifying deceptive people, you should watch videos and read material on manipulation. I would focus on the vibe they give off above all things, if something seems shady it likely is.