As bro said above…money is key.
If you want spend less money directly on the girl herself you can try the common dating apps and filter the ones who react well to your suggestions for fun and 3p. Skout, CMB, Tinder comes to mind.
Having said so, when you find one that is willing to mutually agree to what you looking for it will be many chats later…that means significant time invested in chatting and building some kind of connection or expectation between you. Although that might look free, we all know how the saying goes…Time is Money
Thus once again, be ready for some investment of sort. Which one can you give most,
TIME or
MONEY?