Jee mains 2019
Sorry man...! you can't get any NITs to get CS branch.
you have to score 270-290 to get CS branch @ NIT TRICHI and you can get MNIT JAIPUR for CS branch.
If you can score 160-170 marks in jee mains 2019,then definitely you have chances of getting NITs and your approximate rank will be inbetween 15000-20000 in jee mains.You can get low rank NITs with top branches like CSE/IT/ECE.Also you have chances of getting BIT MESRA with ECE or ME branch.
For more details regarding cutoff of NITs,you can visit the below given link:
https://engineering.careers360.com/articles/nits-cutoff-for-top-btech-branches
Good luck.