NATA

Yes, you can. But the score should be good. Other wise it will be difficult for you to get into a good tier-1 campus. You can try Acharya NRV, Dayanadasagar, etc. with JEE Paper 2 score.

Dear candidate, for taking admission in B.Arch at DITU one should have:a) Minimum 60% marks in X standard & XII standard with pass in Maths (compulsory subject) & qualified in any aptitude test approved by Council of Architecture. (b) 10+3 Diploma (any stream) recognized by Central/State Govts with 60% aggregate marks with mathematics & qualified in any aptitute test approved by Council of Architecture.

Hello Vishnu, try to attempt the same exam next year and from today, start preparing for the exam.
All the best.

Hello Vishnu, if you want to do B.Arch course, you must attempt either NATA or JEE Mains Paper 2, so you must wait till next year.
Or else, you can go for private colleges.
I have the best answer for you- Prepare for NATA and JEE from today onwards and surely you'll crack any of the exams next year.
All the best.