[SatvikBeri]

The good news is that's fairly easy to fix! When I graduated college, I failed my first twelve interviews before making a serious effort to get better. The main thing that helped was actually just practicing in front of a mirror–taking common questions and watching my body language while I did. I immediately noticed several problems–e.g., I never smiled–and with a few days' practice, was then able to pass all the interviews I had afterwards.