U can take drop

Or u can go to other fields

Like defence in which you r interested .don't loose hope

Dear Sachin,

Don't lose hope if you got fewer marks in 12th and jee-mains.

you can opt various courses - engineering, medical, govt. exam preparation etc.

if you wanna opt to engineer as a career then it's good. you can choose some better college that offers some good steams.

some colleges are:
LPU, Chandigarh University, KIIT, SRM etc.

for more colleges:

https://engineering.careers360.com/colleges/ranking/top-private-engineering-colleges-in-India

if you wanna do govt. the job then prepares it. and choose BSC, BCA like short-term courses for graduation. 

good luck