im creating a html form that stores data in a firebase database and when i try to run the code it give this error Uncaught ReferenceError: firebase is not defined. i tried to do as the other posts but did not work

im creating a html form that stores data in a firebase database and when i try to run the code it give this error Uncaught ReferenceError: firebase is not defined. i tried to do as the other posts but did not work

“’

// Import the functions you need from the SDKs you need
import { initializeApp } from “https://www.gstatic.com/firebasejs/10.11.1/firebase-app.js”;
import “https://www.gstatic.com/firebasejs/10.11.1/firebase-database.js”;
// TODO: Add SDKs for Firebase products that you want to use
// https://firebase.google.com/docs/web/setup#available-libraries

    // Your web app's Firebase configuration
    const firebaseConfig = {
      apiKey: "ddd",
      authDomain: "ddd",
      databaseURL: "ddd",
      projectId: "dd",
      storageBucket: "dd",
      messagingSenderId: "dd",
      appId: "1:ddd"
    };
  
    // Initialize Firebase
    const app = initializeApp(firebaseConfig);
          
  // Reference to your 'orderform' node in the database
  const database = firebase.database();
  const orderformDB = database.ref('orderform');
  
  // Event listener for form submission
  document.getElementById("orderForm").addEventListener("submit", submit1);
  
  function submit1(e){
      e.preventDefault(); // Prevent default form submission
      // Get form values
      const name = document.getElementById('name').value;
      const item = document.getElementById('item').value;
      const pickupDate = document.getElementById('pickupDate').value;
  
      console.log(name, item, pickupDate);
  
      // Push the order data to the database
      const newOrderRef = orderformDB.push(); // Push to 'orderform' node
      newOrderRef.set({
          name: name,
          item: item,
          pickupDate: pickupDate
      });
  
      // Clear form fields
      document.getElementById('name').value = '';
      document.getElementById('item').value = '';
      document.getElementById('pickupDate').value = '';
  
      // Show success message
      alert('Your order has been submitted successfully!');
  };
  
  
  </script>

“`