https://helpdeskgeek.com/linux-tips/how-to-install-kde-plasma-desktop-on-linux-mint/
I'm not a fan of Cinnamon either, but switching is easy.
https://helpdeskgeek.com/linux-tips/how-to-install-kde-plasma-desktop-on-linux-mint/
I'm not a fan of Cinnamon either, but switching is easy.