Maybe a mask and a vaccine would have saved Floyd.But they did know he had fentanyl and amphetamines in his system, an "expert witness" testified that they were not the cause of death and they still found Chauvin guilty.
You think Chauvin is not guilty, I think Chauvin contributed to Floyd's death or at least did nothing to try to revive him. Not much more that we can debate as I would not have found him guilty on all 3 charges. I think Floyd would not have died if Chauvin had not had him handcuffed and prone with 3 people on him for 9 minutes. The fact that it might have been department policy is irrelevant. The video is hard to beat here. Alive, yelling, non responsive, dead, no sign that Chauvin cared or did anything to help Floyd.
Let's agree to leave it here and wait for the appeals.