It seems like HCQ would be an effective prophylactic but outside of Indian observational studies, it hasn’t really been shown to be effective. I still used CQ tho. Plus quercetin.
I’ve focused on immune system support using the things on your list (except no Ivermectin). I’ve also focused on general fitness and lost 30 lbs.
If you’re walking around as a type-2 diabetic, undiagnosed type-2 diabetic, or “pre” type-2 diabetic, your CoVid19 outcomes are likely to be much worse. Fix that first. Plus your overall health will be much better and you’ll greatly reduce the likelihood of all the metabolic influenced diseases like cancer, Alzheimer’s, heart disease, etc.
Daily exercise and a low carb diet worked for me.
Bkmk