In flutter using android studio I can't run an app in a real device

Question

I finish an app with go back end, and everything is fine when I run the app with a device emulator, but when I tried with a physical device I can't do it

this is my code

class AppConstants{
  static const String BASE_URL="http://192.168.0.4:8080"; // this is my IPv4 Address
  static const String GET_TASKS="/gettasks";
  static const String POST_TASK="/create";
  static const String GET_TASK="/gettask/";
  static const String UPDATE_TASK="/update/";
  static const String DELETE_TASK="/delete/";
}

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.flutter_golang_yt">

   <application
        android:label="Todogo"
        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">
            <!-- Specifies an Android theme to apply to this Activity as soon as
                 the Android process has started. This theme is visible to the user
                 while the Flutter UI initializes. After that, this theme continues
                 to determine the Window background behind the Flutter UI. -->
            <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>
        <!-- Don't delete the meta-data below.
             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
        <meta-data
            android:name="flutterEmbedding"
            android:value="2" />
    </application>
</manifest>

On my phone I search "192.168.0.4:8080" and can't access it, so in that case what should I do?

Thank you in advance