Flutter apk showing blank screen - flutter

Question

I am currently developing an app with firebase. Using auth, Storage and Firestore Database. When I use an emulator or connect my device to a USB, the app works. But when I use the flutter build apk command and upload with that way app not working. A blank grey screen comes and nothing is happening.
I add <uses-permission android:name="android.permission.INTERNET"/> to android manifest
import 'package:flutter/material.dart';
import 'package:psikoloji/consts.dart';
import 'package:psikoloji/signScreens/onBoarding.dart';
import 'package:firebase_core/firebase_core.dart';
import 'firebase_options.dart';
void main() async {
WidgetsFlutterBinding.ensureInitialized();
await Firebase.initializeApp();
runApp(MyApp());
}
//late FirebaseAuth _auth;
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
/* _auth = FirebaseAuth.instance;
_auth.signInWithEmailAndPassword(
email: "sezenhs22#gmail.com", password: "Ahmet2004");*/
return MaterialApp(
theme: ThemeData(
drawerTheme: DrawerThemeData(),
inputDecorationTheme: InputDecorationTheme(
focusColor: white,
border: UnderlineInputBorder(
borderRadius: BorderRadius.circular(36),
borderSide: BorderSide.none),
focusedBorder: InputBorder.none,
fillColor: white,
filled: true,
labelStyle: TextStyle(
fontFamily: "bold",
),
),
backgroundColor: grey,
elevatedButtonTheme: ElevatedButtonThemeData(
style: ElevatedButton.styleFrom(
elevation: 10,
backgroundColor: blue,
shadowColor: blue.withOpacity(1),
textStyle:
TextStyle(fontSize: 18, fontFamily: "normal", color: white),
minimumSize: Size(300, 60),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18)),
)),
/*bottomSheetTheme:
BottomSheetThemeData(constraints: BoxConstraints.expand()),*/
fontFamily: "normal",
primaryColor: black,
scaffoldBackgroundColor: grey,
appBarTheme: AppBarTheme(
iconTheme: IconThemeData(color: black),
titleTextStyle:
TextStyle(fontFamily: "bold", color: black, fontSize: 22),
color: Colors.transparent,
elevation: 0,
foregroundColor: black,
centerTitle: true)),
debugShowCheckedModeBanner: false,
title: 'Test Et App',
home:
OnBoardingSlider()); //_auth.currentUser != null ? TestlerEkrani() : OnBoardingSlider());
}
firebaseConfigure() async {
await Firebase.initializeApp(
options: DefaultFirebaseOptions.currentPlatform,
);
}
}
And this is my flutter doctor -v
[√] Flutter (Channel stable, 3.3.8, on Microsoft Windows [Version 10.0.19044.2251], locale tr-TR)
• Flutter version 3.3.8 on channel stable at C:\src\flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 52b3dc25f6 (9 days ago), 2022-11-09 12:09:26 +0800
• Engine revision 857bd6b74c
• Dart version 2.18.4
• DevTools version 2.15.0
[√] Android toolchain - develop for Android devices (Android SDK version 32.1.0-rc1)
• Android SDK at C:\Users\SEZEN\AppData\Local\Android\sdk
• Platform android-33, build-tools 32.1.0-rc1
• Java binary at: C:\Program Files\Android\Android Studio1\jre\bin\java
• Java version OpenJDK Runtime Environment (build 11.0.11+9-b60-7590822)
• All Android licenses accepted.
[√] Chrome - develop for the web
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[√] Visual Studio - develop for Windows (Visual Studio Community 2019 16.11.3)
• Visual Studio at C:\Program Files (x86)\Microsoft Visual Studio\2019\Community
• Visual Studio Community 2019 version 16.11.31702.278
• Windows 10 SDK version 10.0.19041.0
[√] Android Studio (version 2021.1)
• Android Studio at C:\Program Files\Android\Android Studio1
• Flutter plugin can be installed from:
https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 11.0.11+9-b60-7590822)
[√] VS Code (version 1.73.1)
• VS Code at C:\Users\SEZEN\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.52.0
[√] Connected device (4 available)
• sdk gphone64 x86 64 (mobile) • emulator-5554 • android-x64 • Android 13 (API 33) (emulator)
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [Version 10.0.19044.2251]
• Chrome (web) • chrome • web-javascript • Google Chrome 107.0.5304.107
• Edge (web) • edge • web-javascript • Microsoft Edge 107.0.1418.42
[√] HTTP Host Availability
• All required HTTP hosts are available
• No issues found!