The general view is that in Germany, people only speak German. Not directly related to learning German but an interesting aspect of German culture are Germany’s minority languages, three of which recently gained protected status: the Danish language, the North Frisian language and Low German in the State of Schleswig Holstein.
Probably the most well-known minority language in Germany is Sorbian, a Slavic language spoken in areas southeast of Berlin near the Polish and Czech borders.
Believe it or not, in December 2020, just days before the end of the Brexit transition period, the UK government notified the Council of Europe that Manx Gaelic is now a recognised minority language on the Isle of Man, for which the United Kingdom manages its international relations.