It would be a "necessary add-on" if you could save or permanently set Brave's quick settings. Ohterwise like "rs" said:
Does the job. But it is a "unnecessary add-on". Refer https://search.brave.com/default

I tried it once. It took forever to simply go to brave search. This suggests something weird was happening. Once I arrived, I learned the proper way to add Brave as a search engine from their own site. Go there and follow their instructions.

just simply use: https://search.brave.com/default

Extension inutile
Pour avoir Brave Search comme moteur par défaut, suivre ce très court tuto : https://search.brave.com/default