Microsoft-office-2016-installer.pkg Here

Unpacks and moves application binaries into the /Applications folder.

If your situation matches all four, then microsoft-office-2016-installer.pkg remains a viable tool. microsoft-office-2016-installer.pkg

You have an older Mac (pre-2017) running Mojave or earlier, you already own a perpetual license, and you work offline or in a controlled network environment. you already own a perpetual license

However, the risks are non-zero:

Unlike modern Office 365 (now Microsoft 365) versions, Office 2016 does not require periodic subscription renewal after a one-time purchase, but it also no longer receives security updates or new features after its end of support. microsoft-office-2016-installer.pkg