Flutter application crsashes after adding google_mobile_ads

After adding google_mobile_ads package in my flutter app the application crashes without showing anything.
I have added the required text in the androidManifest file.
androidManifest.xml file:

 <application
        android:label="ad_prac"
        android:name="${applicationName}"
        android:icon="@mipmap/ic_launcher">
         
        <activity
            android:name=".MainActivity"
            android:exported="true"
            android:launchMode="singleTop"
            android:theme="@style/LaunchTheme"
            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
            android:hardwareAccelerated="true"
            android:windowSoftInputMode="adjustResize">
         
            <meta-data
              android:name="io.flutter.embedding.android.NormalTheme"
              android:resource="@style/NormalTheme"
              />
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>
          <meta-data
            android:name="com.google.android.gms.ads.APPLICATION_ID"
            android:value="ca-app-pub-3940256099942544/6300978111"/>
     
        <meta-data
            android:name="flutterEmbedding"
            android:value="2" />
     
    </application>

main.dart file:

import 'package:flutter/material.dart';
import 'package:google_mobile_ads/google_mobile_ads.dart';


void main() {
  WidgetsFlutterBinding.ensureInitialized();
  final initFuture = MobileAds.instance.initialize();
  final adState = AdState(initFuture);
  runApp(MyApp()),

}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  @override
  Widget build(BuildContext context) {
    return MyHomePage();
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        body: Column(
      children: [
        Expanded(
          child: ListView.builder(
              itemCount: 100,
              itemBuilder: (context, index) {
                return ListTile(
                  title: Text("this is $index"),
                );
              }),
        ),
      
      ],
    ));
  }
}

i am using android emulator with google play

I have added the Meta tag below the activity tag and have tried other fixes but none are working