It is difficult for you to get the good college as you rank is lagging behind. But there are many colleges where you can get the seat in CSE. Here you have not mentioned that whether you want to get the admission in Gujarat or out side Gujarat. You have the choices. And after your result you have to go for the counselling process scheduled by the committee of your state. In that you have to go for the online counselling through the site of central admission committee. You have to fill the choices according to your course and you can enter the multiple colleges. After the counselling rounds, you will be getting the merit list based upon your marks. If yo could not get the seat in first round of counselling then you have to go for the other rounds. After getting the seat you need to confirm your admission in the college you have been alotted.