@Yashank Choksi
You'll want to look for the biggest information inefficiencies in a given market. I often hear people (incorrectly) think that they can just evaluate Zillow listings and find hidden opportunities. Zillow is a very efficient data aggregator, so the market will behave accordingly and most things there will trend to the real value given all information.
Where you can find an advantage is having an alternate source of information, and combining it with an efficient source like Zillow. You'd have to be very creative, but you may (for instance) know something about boat owners and the fact that they want a larger driveway (to store a boat). So you build out a model to find coastal areas, lower hurricane risk, and long driveways priced under the neighborhood level.
That was a completely contrived example, but hopefully it gives you some ideas. The informational advantage is going to come from a specific theory and relentlessly seeking data to prove or disprove that hypothesis.
Sadly, these kind of informational advantages tend to help at the margin. As a result, they are most profitable for investors doing a lot of volume in a region. If you're working with flippers or wholesalers that do one deal a year, you'd be much better hitting the pavement.