Ask HN: Way to remove certain URLs from Google search?

If I search for something ,visit a link (e.g medium.com/xyc-blah) and mark it as "useless",it should not come up in my search again.Or there should be some indication so that I don't have visit the same useless link again. If that's not possible,it should show a warning or redirect to some page if I click that useless link (e.g medium.com should be allowed. But medium.com/xyc-blah should not be )

Is there such an extension for this problem ? Blocking a particular URL or something like that? How do you keep track of useless URLs/