Hi Anvith!
Congratulations for your JEE Rank. According to previous year cutoffs the minimum rank for EWS category who got admission is around 5,000 to 6,000 but your rank is 30,000 and with this rank it is impossible to get into any NITs or IIITs. Still you can try your luck by participating in CSAB special counselling or apply in state engineering college.
And don't forget to check out the Career360 College Predictor to know your college admission chances based on your JEE Main Rank, Home State, Caste, Gender, etc. -
https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer
Happy Hustling.
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