Site name and site navigation will not be translated automatically with multilingual feature. To show the site name, navigation of your site in the different languages you've made available, each must be translated manually. You can add or update translations when you edit any of these elements.
1.In the home page, click Settings at the top of the page -> Site Information -> Under Site name, click Translate site name -> Under Site description, select Translate site description -> Add your translated site name and site navigation.
Note: The site name and description are not translatable in sites connected to a Microsoft 365 Group.
2.In the Edit navigation panel, select the ellipses next to the link you want -> Edit -> Under Display name, select Translations -> Add your translated display names.
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