Do you know any student from a not so good medical college or even from private medical college who got a good PG seat at AIIMS Delhi?

Honestly speaking the type of doctor you become depends not on the institute you hail from but on the skill set you acquired and your own intellect. A patient does not care from which college they graduated but cares about your skills, your ability to make them believe in you, your delivery skills, and the satisfaction they get after consulting you. Your skills are more than enough to prove your talents as a doctor and your college has little to do with this the medical field is different from an MBA where the brand of the college determines your pay scale. Even average doctors manage to do well in this field owing to their ability to satisfy their patients and convince them.

So it's high time we look at the bigger picture and stop focussing on the medical college you will be completing your UG or PG from.