Sir please
Lucknow university organises its own admission test.So you can go through that you can also check for admission on the basis of jee main rank.But this is my personal advice that if you wanna to do btech then you must give jee main Beacuse many good university allow admission on the basis of jee main.So score best in it.You can also get Top NIT also.And there are some IIIT.