Are you trying to install this on an like Windows XP, or are you just looking for a free way to edit documents on a modern PC?
You can use Word, Excel, and PowerPoint for free via a web browser at Office.com . It requires no installation and is always the most "updated" version available. 3. Google Workspace
For those with limited storage, Google Docs and Sheets provide a cloud-based experience that requires zero disk space. Summary: Proceed with Caution