Hi Tom,
Thanks for reaching out to the community.
For the question you have on the query, I'd love to inform you that Microsoft has rebranded and redirected the traditional office.com and microsoft365.com portals to a new unified experience at: https://m365.cloud.microsoft
This is now called the Microsoft 365 Copilot app, and it integrates productivity tools (like Word, Excel, PowerPoint) with Copilot AI features in a single interface
Refer to: The Microsoft 365 app transition to the Microsoft 365 Copilot app - Microsoft Support
You can download your application at the last option of the left side bar:

Furthermore, although Microsoft may prioritize the Copilot Chat interface for your account type, you can still download the desktop versions of Word and Excel through different portal:
- Go to: https://account.microsoft.com/services
- Sign in with your Microsoft 365 account.
- Under Microsoft 365, click “Install Office”.
- Follow the prompts to download and install the desktop apps.
If you have any further question about downloading Microsoft desktop app, please don't hesitate to reach out.
Regards,
Alexis-NG - Microsoft Community Support Specialist