Try not to put so much weight on 'alpha' thinking, you only identify with an 'alpha' mentality because you may not be content with your own state of mind, something which you may see in others that you recognise as an 'alpha'.

Again, as dale said, take up a hobby, go out, enjoy life, make yourself more interesting to yourself, and your girl will be more interested in you, and so will other people, making you more desirable.