The thing is that cold approach doesn't work. You have to employ this thing they call "social circle game". How does this work?
Most Helpful Girl
I would just slowly start to talk to her and eventually get her number and start to text her. After talking to her over text and In person as well for a few months I would ask her in person if she will go out with you. Make sure you spend time in person, it will create less awkwardness between you two0