What could I do to make my cheek bones the same again? The left cheek bone is popping out more than the right one. (photos)

This is easily treated with fillers and I suggest you see someone who has expertise in treating men, using cannulas prevents complications.  Best, Dr. Emer.

The asymmetry with your cheeks can be corrected using fillers which last two years or with a permanent cheek implant. See a very experienced cheek implants surgeon for this.

Yes, you do have a flatter side to your cheek.  Men are very handsome with angular cheeks and jawlines. You could have filler to provide more angularity to your face.  This is a quick office procedure when performed by an experienced surgeon.