Good luck with it. You will learn a lot. Also there is no such thing as a Wayland wm, but rather a Wayland compositor, and that is a distinct difference between X11 and Wayland.

osdev is the way, https://wiki.osdev.org/Expanded_Main_Page. I am also following this, so I do not need to build a cross compiler, https://arjunsreedharan.org/post/82710718100/kernels-101-lets-write-a-kernel. I am writing a 64 bit kernel, so I am going to use limine as the bootloader.

I learning about kernels by writing my own.