I live in New Delhi, India and work in an office where I am one of 2 Muslims and the other 60 people are Hindu.

It is becoming extremely difficult for me to follow the religion as I have to interact, eat, shake hands with Hindus while I am in office which exposes me to Najasat in some way or the other.
Moreover, the office is cleaned/maintained by Hindus as well.
I can’t completely isolate myself in this work setting as I will be perceived as an arrogant person .

I feel scared to even pray now and this is driving me away from religion.

What should I do?

You do not need to become overly worried about this. Keep a separate area and cloths for prayers and anything that you don’t know has not been touched with wetness can be accepted as pure