Is it legal to dwell/scavenge from German trashcans/dumpyards?
There's Stas Asket an ukrainian YouTuber who lived solely off of garbage and showed how to cook food with it but post war he migrated to Germany.
Any hopes he continues like he did in his new country? There's something called Tafel, giving out expired food to poor people. Would give of the same vibes.

https://m.youtube.com/watch?v=PW3ZLl1nCKU