A promise is returned instead of firebase data

How can I fix this? I have no idea what event loops, promises, async or await are. You can send me a link to an explanation, or just write me an explanation. However, this is not the main issue. The issue is that I am trying to get firebase data in a function starting on line 38, and I am getting [Object object] instead of the data. But, if I look into the firebase console, it’s giving me [Object Promise] Here is the code:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <p id="i"></p>
    <script type="module">
        // Import the functions you need from the SDKs you need
        import { initializeApp } from "https://www.gstatic.com/firebasejs/9.6.7/firebase-app.js";
        import { getAnalytics } from "https://www.gstatic.com/firebasejs/9.6.7/firebase-analytics.js";
        import { getDatabase, ref, set, get, child} from "https://www.gstatic.com/firebasejs/9.6.7/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
        // For Firebase JS SDK v7.20.0 and later, measurementId is optional
        const firebaseConfig = {
          apiKey: "AIzaSyCnfB3Tfu9bo7PyEvhB1ZAPBbit7ZWm9D8",
          authDomain: "square-1cdce.firebaseapp.com",
          projectId: "square-1cdce",
          storageBucket: "square-1cdce.appspot.com",
          messagingSenderId: "82191280296",
          appId: "1:82191280296:web:45e62faffbb7e8a94cfa9d",
          measurementId: "G-NT53HS3WE9"
        };
      
        // Initialize Firebase
        const app = initializeApp(firebaseConfig);
        const analytics = getAnalytics(app);
        const db = getDatabase()
        const dbRef = ref(getDatabase());
        var data={};
        var x=prompt("Message:")
get(child(dbRef, "text")).then((snapshot) =>function(){
  if (snapshot.exists()) {
    data=snapshot.val()
  } else {
    data="No data available"
  }
}).catch((error) => {
  console.error(error);
});
        set(ref(db, 'text/'), {
          texts: get(ref(db, 'text/'))+"<br>"+x
        });
        document.getElementById("i").innerHTML= data;
        </script>
</body>
</html>

Ps. I am a ten-year-old learning javascript. My father signed me up for classes.
Pss. I made the read and write values in the rules true, so anybody can change the data with this code.
Psss. Pressing on “run code snippet” will not work. You would have to run this code from an IDE.