Hello Shushank Walke 

See, first with 57% marks i dont think you will get into NITs or IITs, as you donot fulfill the basic eligibility criteria of 75% or top 20 percentile.

So, i would say choose the colleges which have eloigibility criteria less then that you have scored.

you can go for the colleges in bangalore through COMEDK

Then appear for the entrance exams like comedk, MHTCET etc. and clear the cutoff and get into it.

Other than this if you havent filled the entrance application fo0rmand want to get admitted this year itself then  i would ask you to opt for management quota seats in private engineering colleges.

Hope that helps!