Hey,
You did not mention your category. If you are from general category, then with this rank your percentile would be less than 84. The cutoff for general category this year is 87.89. Since you did not clear the exam so sitting in Jee Advanced 2021 is not possible.

You can refer the link for cutoff of all the categories.
https://engineering.careers360.com/articles/jee-main-cutoff/amp

You can use the college predictor tool to know about the colleges that you can get with this rank in Jee Mains 2021.
https://engineering.careers360.com/jee-main-college-predictor?utm_source=qna&utm_medium=jee_cp

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