Hi and thanks for writing JA
The usual way in these environments is to buy the woman a drink. That is the time honored method. If you are looking for women in these areas then you are probably more interested in a casual or sexual relationship; than a long term more intimate or romantic relationship so think with your wallet and you should do fine. Be careful though. Its hard to judge who are you getting involved with and you do not want to wind up with a professional or a player or someone than can harm you in other ways.
I hope you get the girl.
Hmmm then clearly there is something in your approach.
You know maybe you should look for a girlfriend first and then tackle the pick up thing next? Most people do it this way. I find that many young males learn cues from their female friends about how to behave in such a way that other females find them attractive and desirable. Have you thought about looking for a girlfriend instead of a pick up first?
I know if you are looking in bars and lounges there is a reason you want something superficial and without strings attached but even having a girlfriend for six months would improve your chances a lot and you could end the relationship in six months or before things got too serious. Take what you have learned and become a better pick up artist?
Let me know what you think and sorry to hear you are struggling so with this.