I also had random freezes when attempting to install CachyOS on the AMD AI 370 (no external GPU, just integrated graphics).
Several errors misleadingly pointed to the AMD gpu driver. My actual problem was the Wifi card which was unstable. It was also unstable in several other Linux distros I tried.
I simply replaced it with an Intel AX210 which was only around 20 GBP and has long had good Linux support. I had no more random freezes.