![](https://lemmy.pt/pictrs/image/1d59de8e-b63a-46a0-bde6-000f67dae675.jpeg)
If you set the language(s), it will show only posts with tha language (is set) on your feed, otherwise shows all languages.
https://join-lemmy.org/docs/users/06-other-features.html#language-tags
Most posts don’t have a language defined (undefined), don’t know if they’ll also show on your feed.
It could be defined by the instance or community
https://join-lemmy.org/docs/users/06-other-features.html#language-tags