Hi Shivam,

Looks like you are really scared now but think will that surely help you? But the rank that you may have got is a little lesser to aim for really good IIITs and GFTIs as you did'nt mention your rank. I genuinely see the efforts you would have put in making your dreams fulfilled and now you must be really tensed.. Its okay. I would still like to attach a link below for you to check the colleges you may expect with reference to last year's statistics. 

Https://engineering.careers360.com/jee-main-college-predictor

Using the link above,you can compare colleges and decide carefully before taking up one. If you are very sure with taking up CSE,I would always advise to take it even in decent colleges and ultimately work hard for your future.Feel free to ask doubts,if any.

Best wishes!