Dear aspirant
At first lots of congratulations for your results .
I .According to trends of previous years and this year's JEE MAIN cut off I am afraid to inform you that your chances of getting admission into colleges NITs in computer science and engineering department are negative. However you can get seats in other departments of NITs if you belong to that particular home state catagory like
NIT BHOPAL
Chemical Engineering
NIT CALICUT
Chemical Engineering
Civil Engineering
Mechanical Engineering
NIT DELHI
Electronics and Communication
NIT JAIPUR
Metallurgical and Material Engineering
NIT ALLAHABAD
Chemical Engineering
Metallurgical and Material Engineering
However You can try in state level counselling and private colleges .One thing is important that admission in EWS category entirey depends upon that particular category rank , not the All India rank.

However you can get computer science and engineering department in some IITs though like

Indian Institute of Information Technology Dharwad

Indian Institute of Information Technology Kalyani

Indian Institute of Information Technology, Kottayam

you can check previous years cut off
https://engineering.careers360.com/articles/jee-main-cutoff-for-top-nits
check your chances here
https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

Best Wishes.