The user is stuck in a paradox: They need Office to work, but they need a new computer to get Office. They don't want to buy a new computer; they just want to write a Word document.
: A much older version that is also compatible, though it reached the end of support in 2017. Download Links
This setup will continue running Word, Excel, PowerPoint, and Outlook reliably on your legacy Mac. While Microsoft no longer supports El Capitan officially, version 16.50 remains the – the final, stable bridge between your older hardware and modern Office productivity.
After installation, open from your Applications folder.