Keepers can go down in the box at the slightest touch and get a foul called, but at the same time they can literally assault someone without getting the ball and get away with it?

I understand that GKs need a bit of extra protection and leeway. But the keeper should at the very least get the ball to grt away with these, because they are dangerous. The Onana one and this one could easily have resulted in concussions, and its insane that they are allowed