I did have COVID for ~4-5 days - it wasn't "like the flu", it was pretty bad, but thank God, I didn't have any respiratory symptoms, no fever after 48 hours, and I recovered well. I sought help right away, got tested same day.
I was enrolled in a "virtual hospital" and I was told to take
ibuprofen. I asked about vitamin D and they told me to
not take it because it can be very toxic. Regardless of what CNN told you, vitamin D level was associated clearly with survival in COVID in several studies one of which published in Nature, the strictly most esteemed scientific journal. Also, toxicity is extraordinarily rare even at extreme doses - a recent study showed that 50,000 U / day didn't cause toxicity (that's what I ended up taking for 5 days then switched to every 3 days then back to every week).
Also, and I am not even exaggerating, when I told them I had
diabetes they insisted I need to eat a very high carb diet:
toast, rice and bananas. Blood sugar and insulin levels are directly correlated with risk of death in COVID. Eating high carbs increases both in a diabetic. They called me every day to ask me how I was (good), but asked me about my blood sugar and when I answered 75 they'd say "that's low" (it's not, it is normal). I had a lot of nausea so I couldn't eat a lot and I would drink bone broth with butter to have some protein and calories in and to absorb my vitamin D easier, and which also upset them to no end...
That puzzled me: they gave me all the possible bad advice. Nothing helpful - I can live with that, but literally every piece of advice was likely to make COVID worse. Just my experience, just anecdotal.