Back in 2013, 2014, there was a discussion on multi language support "Multi language Support for Frontend?", see e.g.:
Any update on the progress? Will this be a feature we can expect in the future? In a best case scenario, I would need to be able to create different language versions of anything containing text that is rendered to the live site. E.g. Headers, Footers, Menu items, Essays and Pages, Album names and descriptions, etc. Based on HTTP header language the client can accept, (or a less desirable language switch icon), the pages would have to display the correct language version of all text.