Can't exit the game on Android

Unity Engine
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1

When I install the game on my device the quit functionality is not working. I have a main menu and a Quit button with onclick event. I added Debug.Log to that onclick function and it prints, so the function is being called but the application does not exit.

I’ve tried:

#if UNITY_STANDALONE
    Application.Quit();
#endif
#if UNITY_EDITOR
    UnityEditor.EditorApplication.isPlaying = false;
#endif

and

#if UNITY_STANDALONE
    AndroidJavaObject activity = new AndroidJavaClass("com.unity3d.player.UnityPlayer").GetStatic<AndroidJavaObject>("currentActivity");
    activity.Call<bool>("moveTaskToBack", true);
#endif
#if UNITY_EDITOR
    UnityEditor.EditorApplication.isPlaying = false;
#endif

In both cases nothing happens when I click the Quit button.

In Unity editor this code works and application stops playing.