Use a picture of your own that you like

or

do a Bing or Google search for a picture of something and save it where you can find it.

download one of these for a better office?

https://www.google.com/search?q=interior+whitehouse&client=firefox-b-1-d&source=lnms&tbm=isch&sa=X&ved=2ahUKEwimqa34meruAhVRHc0KHW8mAf8Q_AUoAXoECBEQAw&biw=1486&bih=684

1. Log in to the Zoom web portal.
2. Click Room Management > Zoom Rooms.
3. Click Account Settings at the top of the page.
4. In the Account Profile tab, under Background image for Zoom Rooms, click Upload New Image. ...
5. Select your image and click Open.