Let's face it: the search results are not as accurate as Google.

Seems like ddg sends data to microsoft.
https://cyberguy.com/privacy/duckduckgo-privacy-browser-caught-sending-tracking-data-to-microsoft/
there is also a report by Rebel News.

Not exactly sure why this happened but running this addon caused youtube in non private windows to run really slowly to the point where I could only watch videos at 360p and as soon as I turned it off it went back to normal

It is absolutely an ESSENTIAL add-on. You should not crawl the internet without it.

Extension parfaite (tout petit bémol : empêche RMC BFM en direct de fonctionner)

Most of what used to be in this addon is already implemented into firefox now, though is easy to set up and oss if you'd like to use it.

Es el navegador que necesitaba privado y muy tranquilo.

Excelente experiencia, Gracias!

رائعة لكن ما تحتاجها في فاير فوكس عملها شبه عمل منع تتبع حق متصفح هو تلقائي يمنع تتبع متطفل