Their sales and international recognition are small compared to Chinese artists and movies, and most importantly, they do not portray Germany in a positive light because 2/3 of those movies are about Nazi Germany and 1 is a scifi drama that could've been set anywhere.Singers - Nina (99 Luftballoons), Skorpion, Rammstein, Kraftwerk.
Movies: Das Boot, Downfall, Run Lola Run.
Just off the top of my head. Dunno about video games.
Compare to Wandering Earth which not only saw commercial success but portrays China in an overtly positive way.