How to remove rounding in the KDE6 interface

[Lain]

Hey, everybody. It’s very good that KDE is keeping up with the times so to speak, but I categorically don’t like it. I can remove the rounding in the window frame without a problem, but what about the elements I attach here. Thanks for your help in advance.

[claydoh]

You will want to find a Plasma Style what has sharp or less rounded corners, or edit the appropriate svg file(s) in a Plasma Style to change or remove the radius.

I have no idea which specific files, for sure.