If you are moving cities, there are a few ways to get going :

1. Find a PG nearby.
2. Find an existing apartment where they might be looking out for flatmates.
3. Move into a new place with a friend who also works in Bangalore. This option only tends to work if you're staying for a year or more.

Some links that might help :

Stay Safe, Stay Happy at StayAbode | Coliving in Bangalore

89 Xquisit, New Bel Road Bangalore | Price, Review, Photos

Unisex PG/Hostels in Hebbal, Bangalore at Zolo Zen|ZZN

Some sites and groups that might come in handy :

Flats, House, Rooms for Rent at PG prices without Brokers | NestAway

Stanza Living - Your Second Home in a new city.

Facebook Groups

Facebook Groups

Flats, Houses, Apartments for Rent, Buy, Sale Without Brokerage in India

Stay Safe, Stay Happy at StayAbode | Coliving in Bangalore

This list of brokers and contacts might be helpful.