JEE

You may not get seat in NIT if your rank is 2.86 lakhs. But sometimes it depends on your category. There are few chances for getting into IIITs or GFTIs depending on your category. Getting seat in chemical or civil is difficult. You may get seat in least branches.But if you are Home State student of particular NITs or IIITs or GFTIs you may get a seat .
You will surely not get any seat in Josaa rounds . So you need to opt for CSAB special rounds so that you may get seat in some NITs or IIITs or GFTIs for some branches . Chemical or Civil is not a sure thing but sometimes you will get due to luck. It depends on the number of persons who have more rank than you appearing in CSAB rounds and number of seats left in those colleges in those particular branches .You'll have 3 options now:
Settle for some other engineering college and go ahead with its curriculum.
Settle for some other college and work for both your sem and next JEE prepration.
Join in some long term institutes and prepare well this time and give next JEE.

NITs and IITs provide fee waiver depending on your family annual income. Score best and you will receive various scholarships and you may apply for education loans also. After joining the NIT or IIT you will be able to see many types of scholarships based on your study and income.
Your options are
While joining in the college they'll ask about the income
of your parents. At that time of your income is less than 1 lakh per annum then you will be able to study in those institutes for free of cost for study only by submitting income certificate from respected issuing authority.
And there will be a lot of scholarships for economically backward students and don't miss to opt them.
And there will be a lot scholarships for clever students that is high GPA students and students who pass their tests and be wise to opt them also by working hard and getting good grades and make use of it .
And next thing is you can get loans from bank . You can go to the banks and talk to them about the education Loan and they will guide you how to avail it .
Hope this is helpful !!
Thank you !

You cannot get admission in CSE in any of the NITs or IIITs ,but it's also based on your category. For open category there are no chances to get into NITs or IIITs. If you are SC or ST category you may get a seat.
Especially by Josaa you will surely not get a seat , sometimes you may get a seat through CSAB special rounds .
You may get seat in least branches.But if you are Home State student of particular NITs or IIITs or GFTIs you may get a seat .
You will surely not get any seat in Josaa rounds . So you need to opt for CSAB special rounds so that you may get seat in some NITs or IIITs or GFTIs for some branches . CSE is not a sure thing but sometimes you will get due to luck. It depends on the number of persons who have more rank than you appearing in CSAB rounds and number of seats left in those colleges in those particular branches .You'll have 3 options now:
Settle for some other engineering college and go ahead with its curriculum.
Settle for some other college and work for both your sem and next JEE prepration.
Join in some long term institutes and prepare well this time and give next JEE.