Qwant uses click tracking.
Open the web developer console and look at the requests when you open a link. On the main site it is an asynchronous post request, on the lite site they use redirect URLs like Google.
I cannot recommend anyone to use their search engine until they stop doing this.
The image shows the data transmitted when using the main site and clicking the first result.
When you use lite.qwant.com, you get result URLs like these:
They are very bold to tell their users that they are not tracking them, when they actually do the same when you click a result as Google does.
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