Breathing issues can happen due to prolonged sitting duration for years together. Sitting poorly can lead to tightness of the muscles of your chest and thereby causing breathing issues as they do not expand as much as they should.

No it should not be the problem . Check with ent and chest physician to rule out other cause . Their is no straightening of spin in xrays . Cervical lordosis ( curve ) maintained

There is no straightening of the spine seen in this

Dear sir, Most of the times the breathing problem can't be due to straightening of the spine. The breathing difficulty secondary to cervical spine pathology is rare. It is seen in very rare conditions like severe cervical kyphosis ( forward curvature of spine), TB spine with very significant abscess, etc. But in your x ray there is no cervical kyphosis and spine curvature is well maintained.