You likely have a deviation of the nasal septum or dislocation of the septum that is causing your nose to deviated to the right side. The nasal obstruction is due to narrowing of the nasal passage inside. With both a cosmetic and functional problem the correction can be very challenging. You would be best treated by a Facial Plastic surgeon or general plastic surgeon who has an otolaryngology background as well. Unfortunately there is not a reliable non-surgical fix to your condition. The procedure required would likely be a septorhinoplasty with cartilage grafting.
Breathing problems can be related to many different items inside the nose such as a deviated septum, valve collapse, allergies,or turbinate hypertrophy. Each one of these is treated differently with either medications or surgery.
A crooked nose is repaired cosmetically with a rhinoplasty procedure to straighten it. This involves medial and lateral osteotomies of the nasal bones and sometimes a cartilaginous spreader graft placed under the concave upper lateral cartilage.
For many examples of crooked nose repair in our practice, please see the links below
The precise cause of your nasal crookedness could be determined during an in-person examination. If you're considering corrective surgery, you may benefit from consulting several reputable rhinoplasty specialists so you could see what may be best for you.
Hope this helps you.