How do you tackle nervousness while talking to a girl?

A lot of boys including me find it difficult to talk to girl. It seems like a mammoth task. What often happens is that I get nervous while talking and say something stupid😝. Or at times I lack topics to talk about.
This often leads to communication gap and everything goes down😔. Please suggest me ways to get rid of this nervousness or hesitation.
Since I'm from India, it'll be great if your suggestions are in context to Indians. But of course feel free to drop your thoughts.😀
How do you tackle nervousness while talking to a girl?
How do you tackle nervousness while talking to a girl?
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