If you score better next year appox 200 marks in Jee main and same for advanced then you can think about to drop one year . if you convert your currently score in 2X next year then you should do it.

Hey Satyam Singh,
If you have confidence within yourself then definitely you can and work hard and the exams next year. Else you can get admission into NIT'S, IIIT'S. So nothing to worry just give your best.
All the best buddy. :)