[Concern] How can chronic rhinitis be effectively treated?

I bought a nasal irrigation machine, but it's useless.

It seems to be a problem with the nasal structure.

Even though the temperature and humidity are well maintained

It's a bit difficult to breathe through my nose.

Breathing through the mouth causes facial distortion as well.

If you know of anything that is good for chronic rhinitis, please recommend it.ㅠ