In recent years, is NLP used by PUAs? I have watched lot of youtube recent vidoes but none of them talks about NLP. Is it useful to learn? If so, what would be the best way to spend time to be master on NLP?

PS. I am another concern. If someone is negative about you, is it possible to make them positive? If the person is reluctant to carry the conversation or not interested at all, is it helpful to use NLP?