The only reason there is some truth to "What goes around comes around" is because sometimes there are actual consequences for bad deeds (such as getting arrested and going to jail if you commit a serious crime, or losing your wife and family if you cheated). But other than those types of consequences, bad things often happen to everyone rather randomly, some seeming to have more than their share, like cancer and horrific, even fatal accidents among their loved ones.
Most everyone I have ever known has some expensive disaster story involving a motor vehicle and it has nothing to do with whether they are good or bad people, seeming to deserve Karma, or not.
Some people are horrible people and skate through life. For example, we sued a man who owed us $5000. We "won" the judgment but then he went bankrupt. Then, believe it or not he won $250,000 in the lottery (interesting that someone who can't pay their bills easily affords lottery tickets...but anyway...)We know the people where he bought the ticket and he definitely bought the ticket but had his live-in gf claim she won it since many people would have expected him to pay back money he owed! He never paid us a cent of that $5000 and seems to still be skating happily through life, about 7 years later now.
Some here also assume bad people have a conscience that "punishes" them every day when they look into a mirror. I don't think so. I think more an more people today don't even have a conscience at all. Sorry I went way off your topic but I just don't believe in Karma, nor does what goes around, necessarily come back around to those who deserve it most, at least not on this earth.