hi,

according to previous years cutoff from ews category 672 is not enough to get a seat in iits,  see cutoff score changes every year and it depends on some factors like number of participants, questions difficulty level, seat matrix, students category etc, however you may apply for bits, nits, colleges of anna university, vit vellore.

You may use Careers360 college predictor tool to know your predictable colleges

https://engineering.careers360.com/gate-college-predictor