It depends on where you live I guess. I live in Sweden and bike everywhere so I hit ice and go down at least once or twice every winter. It's usually black ice in early winter where things look fine and nothing is sanded or salted yet and you hit a curve that is just glass.

Some neighborhoods don't plow the local roads so that the cars just pack the snow and Polish it into an icerink. If you then add powdered snow so that it looks fine you can suddenly go down and slide several meters. In those situations you are a bit fucked because there isn't enough traction to get up again and you have to turtle a bit until you find your footing.

Summer and spring is mostly fine tough with the exception of 2 collisions from other bikes and once when one of the pedals mechanically failed. This is over more than a decade tough so it sounds like it's more than it is but it's still more incidents than my brother have had while driving which is zero.