I will narrate to you the experience of my sister who thought she could never make it into FMS. But she tried anyway and as luck would have it she made it!
In 2016 my sister did not fill FMS application form as she thought she wouldn’t be accepted. With a percentile of 96.54, she got into MDI. Soon after she got interested in consulting, she rejected MDI and with little hope fill the application form for FMS the next year. With a CAT percentile of 99.21, she received an interview call. Almost all the other candidates had a better percentile than her. Yet she did not give up and went into the interview room with full confidence and a positive attitude. Amazingly she ranked 3rd out of 1010 candidates for GD/PI/Extempore Rounds. After a waitlist, she finally made it into FMS Delhi.
Once admitted she never took this opportunity for granted and made the best out of her MBA years. So never give up even before trying!