I think that you're too hung up on your height.
You're probably correct, when faced with two virtually identical men who only differ in size, almost all women will go for the taller man. And, taller men will get girlfriends without much trouble (unless they are unusually hideous or fat). But that doesn't mean that women will dismiss all men below 5 '8 inches. It is always the psychology that is important; if you can establish a meaningful connection with someone, then your height will go to the back of the woman's mind. And 5 '4 isn't that bad, some men are 5 foot only. And in fact, your height is about average for human males, but, obviously, being a Westerner, this will be of little consolation.
You can't carry about yourself a negative self-image. That will turn the girls off, and it definitely won't do you any good. OK, your height is a disability, but don't let that force another disability upon you.
"The less people know about how sausages and laws are made, the better they'll sleep at night".
- Otto von Bismarck