Screenshot from https://github.com/German-git desktop using the Bing Wallpaper script
So there are a lot of flatpak and snap apps for wallpapers which work on Gnome and Kde, but they almost never work on Kde except Variety which has some critical bugs on Xfce.
How I found a solution
I was searching for weeks time to time for a good and easy to use solution. I installed a lot of apps, but they all didn't worked fine and were broken for Xfce or Propriety Software like Wonderwall. Then I discovered a python script on Github which was created 6 days ago.
How to use it?
I just did
git clone https://github.com/kazuki/xfce-bing-wallpaper in my terminal and then
cd xfce-bing-wallpaper and
python3 bing-wallpaper.py to execute it. 2 Seconds later the daily Bing wallpaper showed up on my desktop. After that I went to the Xfce-Settings-Panel and opened Startup-Applications and clicked on the plus button to create a new start app / script. Then I wrote there
python3 /path/to/script/bing-wallpaper.py and at the next day after rebooting my machine I got the next daily wallpaper.
Thank you for creating this awesome script!