6 months post-op. My surgeon was highly recommended, so why did my rhinoplasty turn out so badly? (photos)

The area you have highlighted is ala contour irregularity caused by either a cartilage graft, lower lateral cartilage buckling or lower lateral cartilage transection.
It is a technical adjustment that must be made and can be done as a revision case.
Start by discussing the problem with your surgeon. If you need a second opinion discuss this with a rhinoplasty surgeon who is familiar with revision work.

Without seeing before surgery photos hard to be exacting. Appears residual lower lateral alar cartilage on right tip, nostril contriction effect. These are revision candidates. So best to retun or seek new surgeon.