Related Covid 19. Bed is not available.

Sir, It is now advised everywhere by renowned doctors that only steroids and blood thinners can prevent covid from further damage...like prednisolone and warfarin...but no one is clarifying on how should it be taken... about its dosage... and can we start on 5th day from the day of first symptom without getting breathing problems ...normal physicians know nothing about them(use of steroids in covid) ... they only give antibiotics which are of no use in covid 19... and nowadays even hospitals are not reliable... So please tell me on how to take them...I'm asking for help as I recently recoverd from fever dry cough...but most important I lost my complete smell...I may be a case of mild covid...so now I'm afraid for my parents...I want to how to treat someone who is a suspected covid patient in emergency situations...if a doctor or a hospital with an oxygen bed is not available...I'm submitting this query out of fear... please help me if possible... and sorry for my language. Thank you.