Computer Science and Engineering

Try to take admission for computer science engineering.

Vishnu College from Bhimavaram.
RVR & JC College from Guntur.

For general category rank should be below 3500 and marks depend on the cut off but on an avg 240 marks.

Not a doubt, MNNIT Allahabad CSE. See placement records at www.academics.mnnit.ac.in
From my experience, I can say that coding culture at MNNIT is awesome.

I doubt you can get a seat from counselling. You could try for a management seat.

After completing M.Sc. in Computer Science, one can find lucrative career options in government sector organisations like National Buildings Construction Corporation Limited, Centre for Development of Advanced Computing (C-DAC) and Bharat Sanchar Nigam Limited (BSNL). Some of the opportunities which

1.Reva institute of technology and management, Bangalore
2.jss academy of technical education, Bangalore
3.BNM institute of technology.

As you told that you have interest in every field I think you are an all-rounder. Jokes apart, all these courses are professional courses. You can't do this and that, and my best opinion is that choose as per your interest. And choose wisely. At this rank and mark, you can't get IIT.