OK, strictly speaking not just wefwef, but please understand that the languages settings in the web-interface of Lemmy can have huge impact on your experience.
If you choose the wrong or not enough languages, you might miss out on content posted to the fediverse.
Don’t get me wrong, the language setting is a good idea. But it appears many users don’t understand it and post in some language irrespective of the actual language of the OP, resulting in you not seeing those posts.
Help me understand better, please. Currently I just have English selected. Will this have a larger effect than simply filtering out posts that are not in English?
You might also want to add “undefined” as some posts may not have a default language tag and you’ll miss those posts. I filter out other languages and haven’t missed out on much IMO.
Some people set their language wrong and you won’t see any of their posts, even if they’re actually written in English.
When I accidentally set my language much stricter, I noticed how many OPs suddenly disappeared. But YMMV.