If you want to use applications from sources other than the App Store, you can adjust your security settings to allow third-party apps. To do this, go to the Security section of your Google Account. You may see a warning that the application isn't notarized and that Apple couldn't scan it for known malicious software. By default, your Mac's security and privacy preferences are configured to only allow apps from the App Store and identified developers.
When you launch a new app for the first time, you'll be asked if you're sure you want to open it. Third-party apps may have access to your location and can use the platform's features, such as location history, app diagnostics, and more. These features are denied to most apps in the store. After installing a third-party application, it's important to revoke any permissions that you don't want it to have so that additional applications are not installed without your knowledge.
