Post Exertional Malaise

I have always been the family "Energizer Bunny". But this was my last family gathering I can host.
5yrs of fighting long covid, since Spring 2020. Always determined I could be regular self by grit. Christmas Day I couldn't even get dressed. I didn't care if PrimeRib got cooked or not.(Which I can't smell or taste anyway) I've jumped into almost every suggested idea on this site..... supplements, etc., Skeptical relatives still don't understand. I was @ Mayo LongCovid clinic 4yrs ago, my Primary Doc is sympathetic, but Standard_Of-Care simply doesn't work for this weirdo viral invasion. Only coping strategies offered.
The whole world, millions of people , affected, but still no cures???!!!