DXVK does not run on Mac OS. There's a modified version based on an ancient release of DXVK that kinda works on MoltenVK but the D3D9 side never worked.

The D3D9 implementation in DXVK uses a Vulkan binding model trick to improve performance that MoltenVK can't handle.

Besides that, DXVK simply requires modern Vulkan features that MoltenVK doesn't support.