With a JEE Main rank of 2,46,565 (assuming general category), chances at top NITs/IIITs are low. However, you can still consider:

Good Engineering Colleges That May Accept:

1. Private Colleges (through JEE Main or direct):

Shiv Nadar University, Noida

NIIT University, Neemrana

UPES Dehradun

Amrita Vishwa Vidyapeetham (some campuses)

SRM University (mainly through SRMJEEE, but JEE score also accepted)

Lovely Professional University (LPU)

2. State Colleges (via State Counseling):

TNEA (if Tamil Nadu domicile)

MHT CET (Maharashtra)

COMEDK (Karnataka, for private colleges)