Where can I go to see movie shootings in Hyderabad? Just for fun?

I always wanted to see movie sets and see how shootings happen as an outsider.

Also there are so many extras in movies, how do they cast them? And how can I apply to be an extra?

I have no interest in getting into movies, but I think it would be fun to appear in the background in a big movie, just to pause it and show off to friends.

Anyone has any experience of randomly being in a movie?