Here in the US, all you need to do is go to a college town. It's filled with model-tier white girls, some portion of which are actually decent people and aren't drug-addled whores. Just normal, slightly dumb girls trying to get their degree in some silly subject. You're looking for ones that have a strong relationship with their father, and who's parents are still married. That's the gating criteria.
Here's something for free. I'll tell you how to get them. This strategy is unparalleled and you can have as much female companionship, from as many unbelievably smoking hot girls as you want.
Here's how you start: learn everything about undergrad math, organic chem, anatomy/physiology, computer science. If you are white and 100+ IQ, this is just a fun activity for you.
Now, you start your own tutoring services company on campus. The rates are affordable, but not bottom-dollar, and you offer financing to pay in installments so they don't need to come up with the cash up front.
Here's the critical part: you are a dope motherfucker. You need to not be obese, have skincare problems, fucked up teeth, etc. You can do Calc I in your sleep. With humor, approachability, and patience. You make math seem fun. You are a graduate student taking PhD-level math for fun while working on a business project. Copy that language exactly.
So now you have a marketing funnel. You don't tutor dudes because you are "booked" unless they are willing to pay big $$$. You have a stream of 19, 20, 21 year old girls who actually respect you. After you get to know them, they are more comfortable, you invite them to just come over to your place not far from campus. You have a legit tutoring setup there with desk, seats, whiteboard.
You're slow-cooking ribs, homemade sides from scratch. You are a professional focused on tutoring, so you get right into the material. You've developed a rapport by this time, so you can jab them a little bit. Come on Kelly, you know this, it's integration by parts.