The link to https://browse.feddit.de/ is dead and should be updated to https://lemmyverse.net/communities.
Personally i think it would even make sense to link this from the main site sidebar. Not because it is a problem finding communities on other instances from within world, at least this should be the best instance to be able to, but as a function of being a “role model” for other instances.
My question was more about where you found the dead link to browse.feddit.de you mentioned in your comment
The link to lemmyverse is in this post: https://jlai.lu/post/541698
Oh, i have missed that. Sorry! Updated my comment.