Your photos suggest hypertrophy or overgrowth of the lower lateral cartilages, which are horseshoe-shaped cartilages making up the tip of the nose. The depression concerning you sits just above them, and is made more pronounced by this cartilage overgrowth. While nasal surgery/ rhinoplasty is best to correct this overgrowth and reshape and narrow the nasal tip, the depression can certainly be addressed with a bit of injectable filler. My preference would be a relatively firm, dissolvable filler such as Restylane or Voluma. Please seek out a physician well-versed in nasal filler injections and their associated complications, as this this an area that can definitely have filler-associated problems. Best of luck!