I’m surprised that Woolworth’s, which disappeared from the US decades ago, has stores in Germany. If the Germans pronounce “Woolworth’s” as though it were a German name, it would sound considerably different than it does in English.
Here’s the Wiki on Woolworths; interesting that it began to die when it got away from its ‘roots’:
https://en.wikipedia.org/wiki/F._W._Woolworth_Company