Uninstall kde plasma

I want to uninstall KDE plasma, I have already created a new user account and group and installed LXDE and tried running pacman -Rns kde ******** in the new user session in the LXDE environment but it says it cant find kde to uninstall. any help appreciated

Use Pamac-gtk’s feature to show packages grouped by category. Select plasma one and remove those you don’t need.

Remove all packages in the groups plasma, kf5, and kde-applications.