GNU/Linux CachyOS Installing Radeon RX 6300 Driver Guide
How to Install AMD Radeon RX 6300 Graphics Driver on CachyOS GNU/Linux 64-bit Desktop – Step by step Tutorial.
And there are 2 Radeon RX 6300 CachyOS Driver available Alternatives of AMDGPU: Proprietary and the Open-Source.
The AMDGPU Pro Software includes Support for Accelerated Graphics, Mesa Multimedia, Pro OpenGL, Pro Vulkan and Pro OpenCL.
But for the Radeon Open Source Drivers See instead: How to Install AMDGPU – Step by step Tutorial.

GNU/Linux CachyOS Radeon RX 6300 Driver Installation