Every couple of years I give KDE Plasma a spin, and I've found it disappointing every time. Nothing terrible, just a lot of tiny bugs and inconveniences. I find it strange that it gets recommended as a beginner DE so often just because the layout resembles Windows a bit more. Gnome is so much more consistent and aesthetically pleasing... not that I use it, but it's always my strong recommendation for beginners.

Good luck on your Linux journey!