Fever, pneumonia, Medicine need to add?

I have fever , body pain and sore throat from 6th May. Took doctors prescription. Diagnosis test result on 13th may  are - CRP 39.1 mg/l.   ferritim serum 215.4  ng/ml  , blood sugar random 124 mg/dl and chest X ray . Today 17th May  HRCT scan done. CT score is 17/25. Spo2 92-94 (sitting/Rest position). After walk/ washroom - spo2 reduced to 88-89. And some breathing problem start. Medicines are - fastclav 500, doxypal DR L , rabilow D, dolo.650, immu c ,  ubifine, montekshi-L , mecbery xt syrup ,  rompred 8mg , Amucoe  Nac tab. Pls suggest should I need to hospitalized or can treated at home. Is hospitalization required?? Also can the given medicines are enough to cure or what steroid or medicine need to add ?? Report attached.