I have a multilingual website (DE /EN), realised by "Internationalization"-tool. German ist the preferred language. So I changed my multilingual Settings in default language: german (Checkbox: Attempt to use visitor's language based on their browser information + Redirect home page to default language section). I also created a multilingual sitemap and linked it to google search console. The search result is a mix beetween two languages, see picture. When I simulate the crawling by google, it links to the english homepage, see picture.
How can I fix this?