Usually, whenever I [19M] see a girl, I know how to open and what to say but very often after opening, my brain becomes empty as if I forgot all the words. How do I overcome that? Also, as I am talking to a girl who I've never met before and, hence, don't know anything about her, what are some universal topics that I can talk about in any situation?

I am new to PUA and got to know about Game a few months back. At first I was just reading stuff and watching videos on YouTube, but now I want to actually use it real life. It doesn't seem easy for me 'cause I easily lose confidence near girls as I am constantly thinking in my head that they are judging me or something.

I am sure many have faced this, so any advise on gaining confidence and/or conversational skills would be really helpful for me.