Android 11 Scoped storage permissions SK

Question

My App use the file paths of images and music and videos provided by Environment.getExternalStorageDirectory() to create albums of photos, but with Android 11 I won't be able to access directly files.

According to the Android developers documentation they recently introduced the MANAGE_EXTERNAL_STORAGE permission, but it's didn't work with me .

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE" />


android:requestLegacyExternalStorage="true"

---

        public void onClick(View v) {
        //    R.raw.tunejonakaha, R.raw.kuch_is_tarah_atif_aslam_sad_love_song, R.raw.happy_music, R.raw.meherbani, R.raw.party_on_my_mind_ft_kk
            final int[] mSongs = new int[]{};
            //"tune jo na kaha", "kuch_is_tarah_atif_aslam_sad_love_song", "happy_music","meherbani", "party_on_my_mind_ft_kk"
            final String[] mSongsName = new String[]{};
            for (int i = 0; i < mSongs.length; i++) {
                try {
                  //  String path = Environment.getExternalStorageDirectory() +"/RawMusic";
                    String path = Constance.rawMusicDirectory;
                    Log.d("pathaaaaaaaa", "" + path);
                    File dir = new File(path);
                    if (dir.mkdirs() || dir.isDirectory()) {
                        // String str_song_name = i + ".mp3";
                        String str_song_name = mSongsName[i] + ".mp3";

                        CopyRAWtoSDCard(mSongs[i], path + File.separator + str_song_name);
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            Intent intentMusic1 = new Intent(context, ActivityRawMusic.class);
            //intentMusic.putExtra("checkForMusic", true);
            startActivityForResult(intentMusic1, REQUEST_Music);

        }

---

public class Constance {

public static File FileDirectory = Environment.getExternalStoragePublicDirectory("Full Screen Video Creator" + "/");
public static final File CACHE_MUSIC_DIRECTORY = new File(Environment.getExternalStorageDirectory().getAbsolutePath(), "FullScreen_Video_Creator_Music");
public static final File CACHE_MUSIC_File = new File(CACHE_MUSIC_DIRECTORY, "defaultmusic.mp3");
public static final String rawMusicDirectory=Environment.getExternalStorageDirectory() + "/FullScreenRawMusic";

Is there anyone who better understood the Android Documentation???