Community members and experts generally advise against trying to find old trial keys due to security and activation hurdles.
“MS no longer supports Office 2010. That means no more updates and no online downloads. They really want to "encourage" people to "upgrade" to 365.” Microsoft Learn · 4 years ago
Microsoft ceased distributing trial versions of Office 2010 shortly after the release of Office 2013 and Office 365. Critical Review of Online "Free Keys" Office 2010 free trial key
A popular, free, open-source alternative that is compatible with Office 2010 file formats (.docx, .xlsx). Perspectives on Office 2010 Today
Using unsupported software like Office 2010 exposes your device to security vulnerabilities because it no longer receives protection against new malware or viruses. They really want to "encourage" people to "upgrade" to 365
Since Office 2010 is obsolete and potentially unsafe, consider these modern options:
Official download links have been retired. If you do not already have the installation media (CD or backup file) and a original, purchased product key, you cannot officially install the software. Since Office 2010 is obsolete and potentially unsafe,
Microsoft offers a one-month free trial for its current subscription service, which includes the latest versions of Word, Excel, and PowerPoint.