Hello Rajeshwari.

See the marks u have scored is too low for u to bag a seat in the NITs for pusuing ur higher studies in btech. U should be going for private institutions and good state colleges for pursuing ur btech career. I m providing u a link for ur help

https://www.google.com/url?sa=t&source=web&rct=j&url=https://engineering.careers360.com/jee-main-college-predictor&ved=2ahUKEwjZkMOY7s_hAhXm6XMBHbdcDiQQFjABegQIBRAB&usg=AOvVaw1pTMu5LewXe0n3JPiA8V2U

Ask if any query. Good luck