I clean installed Neon User 6.0 and found it quite buggy. My advice is to wait a while. Okay for clicking here and there and showing a few menus etc, but some of the underlying infrastructure does not marry well with existing apps. My first Neon User 6.0 install attempted to encrypt the disk, but that was a complete disaster. Neon 5.27 and Kubuntu 23.10 had worked fine with that process. I tried a simple plain-vanilla install, which completed, but many other issues popped up. Even the error reporting did not complete. Take a breath ... wait a few weeks ... or maybe even months, unless all you need is basic browsing and a few simple apps. Cheers...