Most are suitable for Adults, some are suitable for Teenagers. Teenagers seem to like “Dark”. In the language settings, one can choose English or German and/or with subtitles.
There are also a lot of kids shows and movies on Netflix that you can watch in German. I don’t have a list to share, but it is worth browsing kids shows or movies and checking the language settings. Quite a lot of them can be watched in German.
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