Let me break it down for you the only way it truly works.
Get a job at a local lounge and or bar, as a doorman, bouncer, bartender and or DJ, if you want easy ass. Birds will act like well cultured, well mannered ho's just to get something. I've gotten offered blowjobs, flash their t*ts, etc, just to get a free drink, a choice song and or allowed into the club. If you aren't as lucky or skilled...your best bet is to befriend the bartenders and or club owner. They usually pull some of the local birds and invite them to spots after. Which means easy lays for you. If you still can't pull that off, certain cold approach works, just don't use the usual "can I buy you a drink" tactic, it almost never works, and they'll walk away after they grab a free drink, I've seen it way too many times, and plenty of simps are left holding their dikks in shame.
What always worked for me, is using their vanity against them. Pretend to be a photog, can't tell you how these birds light up the minute you mention photography. I talked about it before on here as well, set up a fake social, say you're just starting, scouting new talent, and boom. You'll at least get further than a dude trying to dance or buy his way into her group with drinks.