Newone, what you describe are signs of an introvert. Feelings of indifference is a coping mechanism. Trust me, I've been there.I don't know man. I lost my sense of connection to another human being, its like I'm too focused inside that I don't care about anyone anymore. Like I don't need anyone else in my life. I can spend a month inside my room without doing anything. I want to regain my sense of connection, because I'm afraid I'll stay like this for the rest of ma life.
I had the same problem too. As an Asian, raised by a strict mom who emphasized education over a social life, I got screwed all the way through college.
Because networking is essential to my business, I WANTED to transform, so I took the steps since 2006, invested a lot in my self-development, spent money, got trained by some of the best coaches, and worked as an outsourced PUA lifestyle coach providing low cost instruction.
Your problem here is your "cup is not full." There is a void. Therefore you think a girl is going to change that to make you feel oomplete, but it can't be further from the truth.
Look for a woman as a complement, not for completion.
Before you even learn anything about PUA, you need to focus on your self development. To get rid of this void, you need to "push out the edges" of your life - social, health, and financial. And from there build your inner game and your sense of self worth and value. If you don't perceived yourself as a high value man and feel good about yourself, you will not be able to convey that to any woman. And that is why you are failing. Your behaviors inform your actions.
This will be harsh advice, but right now, don't chase a girl. Cut your losses. You are not ready. Take a step back and focus on yourself first.
No external game technique, routines, lines will help. It's like building a house on faulty grounds. I don't care how nice the decor is.