if statement returns wrong output JavaScript (Node.js, Express, MongoDB, Mongoose)

I'm trying to add new items in my mongoDB database with the "app.post" in my "Today" list.

this is my root route with the list title - Today.

app.get("/", function (req, res) {
  Item.find({}, (err, foundItems) => {
    if (foundItems.length === 0) {
      Item.insertMany(defaultItems, (err) => {
        if (err) {
          console.log(err);
        }
      });
      res.redirect("/");
    } else {
      res.render("list", { listTitle: "Today", newListItems: foundItems });
    }
  });
});

Posting a new item in my "Today" list logs the else-statement in my console, even though both logs at the end show "Today".

  app.post("/", function (req, res) {
  const newItem = req.body.newItem;
  const listName = req.body.list;

  const item = new Item({
    name: newItem,
  });

  if (listName === "Today") {
    item.save();
    res.redirect("/");
  } else {
    console.log("Doesn't Exist");
  }

  console.log(listName);
  console.log("Today");
});

Hope this snippet is helpful to solve the problem.