One side of my nose is lower, how can they fix that? (photos)

the asymmetry of your nostrils is only slight.  A surgical,attempt can be made the even them out, but in my opinion would not be worthwhile and may not even correct a problem that is very slight and barely noticeable unless you look for it carefully.

Hello,Thank you for your pictures and question.  So, if your question is that the left nostril is deeper in the face than the right, I would likely place a premaxillary implant on this one side to build up the lower/deeper premaxillary bone.  I can see this bony difference in the photos.  But, if your question is that the left nostril is lower (closer to the chin) than the right nostril, then maybe an one-sided alar surgery to change it's position would be needed.  Sometimes, it also means a rhinoplasty to adjust and reposition the lower lateral alar cartilages.  Best of luck!

although your nostril asymmetry is slight, the right one can be lowered to match the left one. Consult a board certified plastic surgeon.