This tool for manage local files
$ composer require laravel-admin-ext/media-manager -vvv
$ php artisan admin:import media-manager
Open  config/admin.php specify the disk you want to manage
    'extensions' => [
        'media-manager' => [
            'disk' => 'public'   // Points to the disk set in config/filesystem.php
        ],
    ],
disk is the local disk you configured in config/filesystem.php, visit by access http://localhost/admin/media.
Note If you want to preview the picture in the disk, you must set the access url in the disk configuration:
config/filesystem.php:
    'disks' => [
        'public' => [
            'driver' => 'local',
            'root' => storage_path('app/public'),
            'url' => env('APP_URL').'/storage',    // set url
            'visibility' => 'public',
        ],
        
        ...
    ]