The fact is, you can use stats to prove anything you want. 42.8% of all people know that. :
(also note 2018 peak, no lockdowns, no masks, no fuss)
aaand also, if all kind of actions that have been done would really affect something, one could assume this graph should be somehow different than the other years https://www.destatis.de
(*the masks that people use, not hazmat suit)
also, would like to see the studies that correctly show masks significantly cease the spreading and one that shows masks are properly used. empirically i havent seen much proper use.