Why doesn't my profile picture automatically go into the center of my pfp?

Recently, I was changing my profile picture to this F-22 Raptor air superiority fighter but the forum won't place the aircraft in the center of the image. This is really annoying, is there any way that I can fix this? I've tried cropping the image but that just ends up with awkward white bars at the sides of it. (image attached) In my profile picture, it shaves off the nose of the plane a bit and shows some unnecessary space behind the plane.