You seem to be using nasal douching kit which is used to clean the nose of secretions and crusts. Water need not come out of other side. It is not really useful if cause for your nasal obstruction is because of deviated nasal septum, acute rhinosinusitis, chronic rhinosinusitis, allergic rhinitis or nasal polyps.
Next Steps
Consult nearby ENT specialist for confirmation of diagnosis and appropriate treatment if required