Microsoft Office 2021 is not legally free software. It is a paid one-time purchase product. If you promote a "free" download without a license key, it will likely be a trial version , a limited online-only version , or an illegal cracked/pirated copy (which carries security and legal risks).
Protect your PC and privacy. Here’s why you should avoid unofficial “free” downloads. free download of microsoft office 2021
Try the full version of Office 2021 for 30 days, or use free Microsoft tools online. Microsoft Office 2021 is not legally free software