Of course if you just hang out in the lower Sukhumvit sexpat area and only deal with the bargirls and ladies of the night then that is all you will meet.
This city has a whole lot more to offer than just Nana Plaza and Soi Cowboy as many expats know.
You will see so many cute Thai girls in their university outfits that your head will spin, just remember to confirm a girl is of legal age before dating her.
Bangkok has some massive malls, and the nice thing is that many of them are right on the BTS line.
It is a solid mall for day game, and is a good place to go on a date. If you want to go to an area where there are even bigger malls then head to the Siam BTS stop.
Siam Paragon is one of the nicer malls in the city and where upper class Bangkok women like to go.
No reason to limit yourself to just those two, there are loads of pick up bars to go here.
Another great spot for nightlife will be Thonglor where you can visit nightclubs like Muse and Safehouse.
That means you can quickly and easily get to them without having to sit in traffic.
We are going to assume that most guys reading this will stay in the lower Sukhumvit area.
You can also access Siam Center, Siam Discovery, Siam Square, and MBK Shopping center from here.
Basically if you want to try to meet sexy Thai ladies all day long you could do it at the Siam stop without ever walking past the same store twice.
There are other malls around town like Emporium and Seacon Square, but unless you are moving there long term those will be plenty.