Hello,

84 marks is not a good score to go into any IIT college. You have to score more than 50% to be take admission in IIT as 84 marks is a low score. For general category the chances are very low.

You can study more and do better next year.

Another option is you can take admission in any state government college.

https://engineering.careers360.com/jee-advanced-college-predictor?utm_source=qna&utm_medium=jee_adv_cp

This is the link to JEE advance college predictor.

Hope it helps.