[_random_]

Keep searching and applying. Frankly speaking interview is a quite structured experience, so you can learn the rules. Also you will be able to become more extroverted over the time. You are lucky because it's just about only modern profession that allows you to be both introverted and relatively successfull. I would bet that John Carmack and Mark Zuckerberg are quite introverted, it's just that they had a lot of practice and people wanted to hear them regardless.