If you are economicaly poor you can deff go for diploma and then go for D2D i.e diploma to degree.

Dear Suvo
According to me, you can opt diploma and then you can join b.tech. but you need to concentrate on Maths and English.

Dear

For better opportunity , vast course structure , Job market recognition , exposure for further education, Knowledge and specially this kind of competition market you should have edge over other accordingly B.tech degree will give you all for your future.

All the best

Btech would be good for you

if u score more then 75% in 12th then btech is best or if u score less then 75% mark then diploma is best