delete a document from a collection mongoose code example

Example 1: mongoose find by and delete

Campground.findByIdAndRemove(req.params.id, function(err){
      if(err){
          res.redirect("/campgrounds");
      } else {
          res.redirect("/campgrounds");
      }
   });

Example 2: remove everything from mongodb databaase mongoose

await Challenge.deleteMany({})
    await Own.deleteMany({})
    await User.deleteMany({})