I Find Breathing Difficult (Laboured) Through my Nose, Especially the Left Nostril? (photo)

Hello, i generally always find it very hard to breath through my nose, especially the left nostril, so I generally only breathe through my mouth. I'm also getting eye pressure problems/headache/migraines the eye doctor reckons its sinus problems (maybe insufficient airflow coz I generally only breathe through my mouth?). The MRI shows the left air passageway to be very narrow and sort of bent half way down. Is this normal would surgery be recommended or beneficial?