Hi Shivani,

JEE Main is one of the most competitive entrance exam in India and no one can predict the level of competition as it changes every year. I am sorry but your rank is too low to get a really good college and with that branch. CSE has become highly demanding and the first choice of almost every topper today. So it becomes more difficult. I would still encourage you to check the link below with which you may predict your colleges and add preferences accordingly. 

https://engineering.careers360.com/jee-main-college-predictor?utm_source=google-search&utm_medium=paid&utm_campaign=jeemain-clgpd

Best wishes!