Hello aspirant

hope you are doing well and safe. With reference to your query,  I would glad inform you that their are many colleges in which you can go for to study btech if you dont get admission in NIts and IITs if you can do hardwork in coding . Following are the names of colleges:-

1. Guru gobind singh indraprastha university

2. Amity university

3. Thapar university

4. SRM chennai

5. VIT vellore

Hope you found this answer informative. Best wishes for your future