[HOW TO] Install KDE (plasma), GNOME, XFCE, Cinnamon, MATE, Budgie, LXQt, LXDE and UKUI Dekstop Environments

I think based on the kernel available and the repos available to Zorin the version available via Synaptic Package Manager is 5.27 which I prefer over 6 because Tiled Menu by Zren (Win10). You might want to take a look at Q4OS KDE: