Hi, there is a send message option under each listing in Commonfloor. Click that, fill in your contact details and submit. Then the owner will contact you directly, if the property is still available.
For 2bhk flats, you can see real estate portals and customize your search. To name a few, there are gurgaon.investinnest.com, saav.in, grouphomebuyers.com and many. You can Google for others.