Go read my upvoted comment on this post. It gives you insights into #1 and #2. #3 doesn't exist. That's why there's over 800(400 long covid, 400 covid) clinical trials going on right now for it.
It says nothing remotely conclusive about 1), 2), or 3). It literally only says "Here's some hypotheses. We need more research."
And I think I'm done wasting my time with you. I've given you ample opportunity come up with something even a tiny fraction as definitive as the references I've given you and you've failed multiple times in a row.
