I found a similar post here: Manjaro website links broken
Basically, if I search for Manjaro KDE on Google it takes me to https://manjaro.org/download/official/kde/
This page is for the older version 19.
I recommend changing the website so all links to the "/download" get redirected to "/downloads"
I cannot post in Site Feedback yet, and that seems specific to the forums anyway. I'm not sure who else to contact regarding this.