You cannot just copy the ISO file to a USB drive; you must "flash" it.
Before we dive into the download process, let's take a look at some of the exciting features that KDE Plasma has to offer:
If you prefer a rock-solid base with long-term support and a massive software library, Kubuntu is the go-to. It takes the reliable Ubuntu base and replaces the interface with KDE Plasma.
However, unlike Windows or macOS, there isn't just one "KDE Plasma" download link. Because KDE Plasma is a desktop environment used by many different Linux distributions, you have several options.