Hey there, I found a workaround for the duckduckgo search issue.
Here is my notebook that works:
Long story short: there seems to be a problem with version 3.8.5 of duckduckgo library, once I updated to the latest 3.9.5 it started working. Note, that this requires python version >=3.9
In kaggle there is an option in Notebook options I had to change: Always use latest environment (see screenshot)
Hope that helps!