It’s not my job to educate you on what could be a brief Google search. Stop being such a cynic. The gravitational lens distortion of distant galaxies is basically impossible without dark matter. Not to parrot the mantra of conspiracy theorists and cultists, but do your own research.

That seems a bit silly considering how much evidence we have for it. That’s an awful lot of work to throw away for no great reason.

The data it collects is purely from Google’s ad services. Removing ads removed all data collection as well from what other users with duck duck go were measuring.