On the basis of Josaa rankings of previous years, you should have a rank better than 60000 to get a good government institute mentioned in the Josaa list. However, some nits have home state reservation. If you are from one of those states you can get a decent branch in them with your current jee main rank. These nits are- Sikkim, Agartala, Arunachal Pradesh, Manipur, Mizoram, Pudduchery and Harmipur.

If you are not getting a government college under Josaa, you can try for private colleges. You can fill the details in career 360's college predictor. It can help in predicting a good college for yoy. If still you are not eligible for good colleges like lpu, bennett, etc. But you can attempt their entrance exams. If you score good in them, you can grab a seat in them.