Hi I am unable to rvert to the main server in softwear updates. I can also not do sudo apt-get update -y. I am doing this to install dxvk witch I can’t do.

Ok looking at your screen photo, it shows that you have added an OpenSuse repository for WINE that relies on the Bionic Repos. Bionic is Ubuntu 18.04. Zorin OS 16 is using the Focal Repos. Focal is Ubuntu 20.04. You can launch Software & Updates from the app menu. Then move to the Other Software …