Is a functional rhinoplasty sometimes necessary alongside septoplasty? (Photo)

I have a deviated septum which makes my nose look quite crooked. It's genetic & got worse throughout puberty. I was advised by an ENT to get a septoplasty (alongside turbinate reduction & sinus surgery). I can never get any air into my left nostril, unless I do the Cottle Maneuver. Because of this, I'm concerned that straightening the septum isn't going to fix my breathing issues, and that a rhinoplasty would be needed to properly straighten my nose to accommodate for a straighter septum.