Welcome Chris,
In my opinion, (that is, from my very own experience) the real problem does not lies with "the others" but with yourself.
What we really do is project our own self-perception into others. Generally it does not work unless you are a mind reader.
However, we do project a global image to others.
If you do not like your appearance, it will show. This probably is the first thing to adjust.
Take the picture you posted. It is not a very good one. Why ?
Because you do not care how you look ? From your post, I do not think so.
Because it is difficult to look at yourself ? I cannot answer for you. But for me, before, it was "No Picture Whatsoever".
So back to the camera. Dress up ! Adjust the expression, no flash, natural light, shoot from every angle and take a good look at the result.
Now on with the clipper and shoot again.
And if you are feel daring, shave it all and shoot again and again and again. But never in a haste. Take your time. And you may soon discover that you look good (maybe even better) without hair!
And then you will feel better, and it will show.
Now, on with "the girls".
From my point of view, there is no such entity as "the girls". Each person is unique. Statistics are only meaningful when dealing with very large groups. (Want a harem ?)
To think that you cannot seduce someone because you lose your hair is a comfortable way of absolving yourself of responsibility.
What does it take to seduce this girl ? (And not "a" girl) If you do not know the answer; starting with "what does it take to seduce me" may be a good starting point...
Sorry if this seems a little blunt. I know (from experience) that all this is easier said than done...
A final note (at last must you think ! ) about what others have to say. I suggest you read this :
http://www.eturama.com/lafontaine/fables/en/the-miller-his-son-and-the-ass.phpIt's quite refreshing...