Stop what you are doing.
Undo all of your attempts/changes/etc.
Ensure you are running regular AMDGPU.
Then if you need the ‘pro’ extras … get them as addons from these packages:
Lets look at the main points in the Archwiki :
AMD provides a proprietary, binary userland driver called AMDGPU PRO , which works on top of the open-source AMDGPU kernel driver.
From Radeon Software 18.50 vs Mesa 19 benchmarks article: When it comes to OpenGL games, the RadeonSI Gallium3D driver simply dominates the proprietary AMD OpenGL driver.
Note: Users of graphic cards other than Radeon Pro are advised to use the amdgpu graphics stack.
As in … all fingers point to not using pro.
And I again refer to the ‘addon’ packages above if you need some specific component for some specific reason.