Samsung's in-house virtual assistant, Bixby, has been historically linked to many limitations over its life. One of them is the inability to work in certain languages, German and Italian included. However, support for these languages, as well as for Spanish and French, is now being rolled out to its 2.0 version.
https://www.notebookcheck.net/Bixby-2-0-adds-support-for-more-languages.410485.0.html