Selecting a performance PC for linux

For me it’s the safety and performance of the system that matters.
I want to use a full desktop computer, not a laptop. I already have laptops, but for home use a full-fledged computer is better.
I don’t like apple operating system: ios , mac, I don’t want to use them ever.
Choosing between windows or linux, definitely I will choose linux.
I want to buy new components for my computer with emphasis on security and excellent compatibility with linux and preferably qubes OS. I am not well versed in hardware and computer hardware so I am looking for help here.

I will buy a Pixel laptop with GrapheneOS when it is released and available for sale. Currently
moment I want to build a productive, modern home computer for daily work.
I will be using multiple virtual machines luks encryption.
I do not need legacy hardware support. If there is hardware support for RAM encryption , this feature could be useful for me.
I am leaning more towards choosing AMD system components. I am asking for help in finding a complete computer build that better fits my criteria. thank you.