The Footer Navigation is designed to be displayed at the end of every page. It consists of text and links. It also can show the language switch item, which users can use to change to different language versions of the website.
Resources
The Language switch is part of footer navigation that can be enabled with the check-box to Enable Language Selector in the footer navigation on Sitecore.
These videos provide an overview of how you can add the Language Switcher module to your site and what it looks like.
