In the UK where there's universal healthcare, we had Dr. Harold Shipman who murdered a lot, and a current court case with Lucy Letby who killed 8 newborns. Malpractice happens in every system regardless of how it's funded.
Probably not the place for a discussion about healthcare systems on a meme shitpost thread, but I do think there's better alternatives to universal healthcare where standards usually drop for everybody. Obviously, there's some godawful private systems too, just look at America.