php - Laravel 8 404 not found when downloading pdf file from public folder

one text

I'm trying to download a pdf file from public/storage/files. However, I get 404 not found error.

Here's my route:

Route::get('/my_journeys/{slug}/download', 'Site\JourneyController@downloadFile')->name('journey.download');

Controller:

function downloadFile($file_name){
              return response()->download(public_path('/storage/app/files/'.$file_name));
}

View file:

<table class="table" id="land_table">
                    <thead>
                        <tr>
                        <th scope="col">Isvykimo laikas</th>
                        <th scope="col">Grizimo laikas</th>
                        <th scope="col">Keliones pradzia</th>
                        <th scope="col">Keliones pabaiga</th>
                        </tr>
                    </thead>
                    <tbody>
                      <tr>    
                              <td>{{ $journey->start_time }}</th>
                              <td>{{ $journey->end_time }}</th>
                              <td>{{ $journey->start_point }}</th>
                              <td>{{ $journey->end_point }}</th>
                              <td>{{ str_replace("public/files/","",$journey->path) }}</th>
                              <?php $val = str_replace("public/files/","",$journey->path); ?>
                              <td><button><a href="{{ route('journey.download', $val) }}" >Atsisi??sti </a></button></th>
                              <td><button><a href="{{ route('journey.pdf', $journey->slug) }}">Atsisi??sti PDF fail?�</a></button></td>
                      </tr>
                    </tbody>    
                </table>

What am I doing wrong? Any help would be greatly appreciated!