This article explains a workaround for using the Google Home app on your Mac. The app is designed to only work with iOS and Android devices, but you can gain some of the functionality of the Google Home app on your Mac if you install an emulator such as Bluestacks.
How to Use Google Home App on PC/Laptop/macOS | Install Google Home on Windows 7/8/10/11 #googlehome
Once you install an emulator, you can use Google Chrome to use some of the features that the Google Home app offers on a Mac, but it is limited to media casting only. Before you can do this, you will need to make sure that Google Chrome is updated to the latest version.
Launch the Google Chrome browser.
Click on the menu icon with the three vertical dots in the upper right corner.