I am semi-new to linux, so i need a distro with kde plasma
Most if not all distros have KDE.
If you want a True KDE Distro, try KDE Neon.
CachyOS works well enoughh on modern hardware. If all hope is lost, install Debian 10 or 11.
kubuntu ? altho it’s an ubuntu flavor so you’d have to deal with canonical’s questionable decisions (eg: snap packages)