KDE one of the most beatiful interface but why KDE enter things with one mouse button press it is very not practical thing! many times we need just to select (file, folder, any thing...) but when we press on it it opens!
and it is very good thing to an icon or somthing collect all of the apps in one place(like in gnome shell).
I which u conseder my suggistions.

I think it should be in feedback section or KDE Brainstorm or maybe Discussions & Opinions, so move it to its right place and tell me ur mind

System Settings / Input Devices / Mouse / select Double click to open files and folders (select icons on first click)