Hi @KamrynGoodrick You can download ArcGIS Desktop from My Esri > Downloads.

Alternatively, you can also download it from ArcGIS Online under your My Profile > View my settings > Licenses. You should be able to see it next to your ArcGIS Pro icon

However please be aware that system requirements for ArcGIS Pro does not include MacOS as a supported operating system:
ArcGIS Pro 3.1 system requirements—ArcGIS Pro | Documentation
~Just trying to fix things~