Is my browser getting hijacked?

For the past week I have been getting redirected from the duckduckgo search engine; it is my default search engine. When I type in a url, I get a "duckduckgo" page saying "these are not our extensions". Whenever I try to type in a new url, it gives me the same page; no way to "accept" the page and then use the search engine.

https://help.duckduckgo.com/add-ons/removal/

It is constantly coming up when I come online.

Is anyone else getting this? debian 10.