Covid 19 stats website.

carry oxygen to several organs and tissues in the body
This is the reason the whole counting thing is screwy.
Lack of oxygen will shut down your kidneys and kill you. Lack of oxygen will cause your liver to fail. Also fatal. Lack of oxygen will stop your heart.
And it will pretty much wreck every other function of your body. So...did you die from Covid, heart attack, kidney failure, drowning, suffocation, or a combination of some or all?