Hi Michelle. I'm Greg, awarded MVP for eleven years, Volunteer Moderator, and Independent Advisor here to help you until this is resolved.
You'd not use Bing for that need since it provides it's own pictures.
Instead you can set a desktop background slideshow that will show on your desktop which is explained here:;
https://www.windowscentral.com/enable-windows10...
You can also set a Screen Saver slideshow so when you're not using the PC it will time out after a period you set to display your slideshow:
https://www.intowindows.com/how-to-set-photos-a...
Finally there is the Lock Screen on which you sign into Windows which you can also customize with pictures or a slideshow, or the spectacular Spotlight pictures slideshow:
How to customize the Lock screen on Windows 10 | Windows Central
I hope this helps. Feel free to ask back any questions and keep me posted. I will keep working with you until it's resolved.
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