You don't need anything. You look normal.
You're good looking, you don't need surgery. Anyway, since you say you're looking for cosmetic improvement, I would advise you to focus on your hair.
Easy "no you don't need or even remotely want bimax" answer from me. Not even jaw angle implants based on that frontal shot (that's too close to your face to tell much with any accuracy - should be 5-8 feet away).
Imho if your jaws were any more projected they'd just look "off" on your face. These are rather unflattering photos, I highly suspect you'd look pretty good when seen IRL or captured from a normal distance to the camera. If you are indeed balding then you could look into a hair transplant but many surgeons will reject you based on age & norwood status. Doesn't look like your hairline is in bad shape to me. The haircut is pretty s**t though. You should go for the trendy fade cut with a fringe if you want to coverup the hairline. A tan would look good too. Perhaps experiment with some filler, this is cheap reversible and has very low chance of causing side effects.
Thanks mate! I appreciate it. I agree, I'm gonna experiment with hairstyles and look into some fillers.
Serious question. Do you think you might have Asperger's? Also are you taking finasteride yet for your hair loss?