I search lot of academic suff like medicine and programing. Sometimes I search for image results, and my search results are polluted by SlideShare and Slide pl

I search lot of academic suff like medicine and programing. Sometimes I search for image results, and my search results are polluted by SlideShare and Slide player SidePlayer is an ad infested site which also pirate PDFs by crawling for open PDFs and automatically uploading to their website I don't understand why Google gives priority to such websites. I believe including pinterest and sites like SlideShare and Slide player in our search results is what google should allow us to opt in not something we should opt out