you are confident, no anxiety,no nervousness and no shyness. you approach your crush. then you probably want to talk to her and then you realize you are just standing beside her after saying hi. you don't know what to ask. you get disappointed then you search on youtube, r/seduction blah blah blah, and they say you should ask questions. Next day you do the same but still your brain gets emptied out. so next time you prepare and memorize few question, but still again on third time you forget 90% of them.

Conclusion you can't talk to a girl no matter what you do.

then how will you deal such mental problem

if you solve this puzzle then indirectly and directly you are solving my PROBLEM.