u/Chhota-Chetan

Yesterday I had an interview at a company for SDE Intern role, I introduced myself, then told my experience of earlier internship, then achievements, then he asked some very basic questions and I answered them properly, and the interview finished under 20 min.
some of my classmates those are less technically stronger than me got the notification for the round 2. Did I do something wrong, there was no wow factor in interview, any advice for further interviews that how to make conversation more interesting and how to add a wow factor in an interview.