Hey!

With 70 percentile your rank would be around 2,50,000+. This is an average score in jee mains. With this you cannot get admission in any of NITs, but there are chances that you might get admission in IIITs with 70-80 percentile. Also you can get admission in top engineering colleges such as

Lovely professional university

SGSITS INDORE

MAHARASHTRA INSTITUTE OF TECHNOLOGY PUNE

Cv raman global university

UPES, Dehradun

etc.

Also, you can apply for university level entrance exams in which you wish to take admission.

Hope it helped to clear your delimma

Thank you