Looks like laryngitis and pharyngitis. If you have travelled recently or any get-together or exposure to Covid. Kindly get tested. Only with detailed history can arrive at a diagnosis and help in the treatment.
Next Steps
Detailed consultation with ENT specialist. Pain killer and anti Inflammatory drugs will help. Tab Dolo 650 mg for pain and Povidone Iodine solution for gargling. And RT PCR test for Covid
Health Tips
Since you also have breathing difficulty, do not ignore the symptoms.