Just adding to the chorus of users who had issues with Manjaro. It’s a great distro, but sometimes quite frustrating, especially if you’re new.
I switched to Fedora, which is really nice. It’s Gnome, but there’s probably a KDE spin too. No big issues so far, and it’s been almost a year. One small issue is getting video codecs installed. Be sure to select third party repos at install, then look for “gstreamer” in the software app and install all the plugin packages.