Add to that mandatory (includign self made) mask wearing in public space. This is really not hard to do, cheap & can help a lot to prevent infected people from infecting others in public.
Exactly this. Looking at South Korea every citizen got 2 facial masks per week. That's how it should be done - they are only effective if everyone wears them.
The official opinion on mask wearing is absolutely pathetic in Germany. The should declare that there is a shortage, medical staff must have priority, others should use DIY masks.