Real-Time Notifications to superAdmin users using Laravel Reverb

My current codes below does not work as expected

app/Events/NewUserRegistered.php

<?php

namespace App\Events;

use App\Models\User;
use Illuminate\Broadcasting\Channel;
use Illuminate\Broadcasting\InteractsWithSockets;
use Illuminate\Broadcasting\PrivateChannel;
use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
use Illuminate\Foundation\Events\Dispatchable;
use Illuminate\Queue\SerializesModels;

class NewUserRegistered implements ShouldBroadcast
{
    use Dispatchable;
    use InteractsWithSockets;
    use SerializesModels;

    /**
     * Create a new event instance.
     */
    public function __construct(
        public User $user,
    ) {
        //
    }

    /**
     * Get the channel the event should broadcast on.
     */
    public function broadcastOn(): Channel
    {
        return new PrivateChannel('super_admin_notifications');
    }

    /**
     * Get the data to broadcast.
     *
     * @return array<string, mixed>
     */
    public function broadcastWith(): array
    {
        return [
            'id' => $this->user->id,
            'name' => $this->user->name,
            'email' => $this->user->email,
        ];
    }
}

app/Listeners/SendNewUserNotification.php

<?php

namespace App\Listeners;

use App\Enums\UserRoles;
use App\Events\NewUserRegistered;
use App\Models\User;
use Exception;
use Filament\Events\Auth\Registered;
use Filament\Notifications\Notification;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Support\Facades\Log;
use Illuminate\Support\HtmlString;

class SendNewUserNotification implements ShouldQueue
{
    /**
     * Create the event listener.
     */
    public function __construct()
    {
        //
    }

    /**
     * Handle the event.
     */
    public function handle(Registered $event): void
    {
        $user = $event->getUser();

        if ($user) {
            try {
                $superAdmins = User::role(UserRoles::SuperAdmin->value)->get();

                foreach ($superAdmins as $superAdmin) {
                    Notification::make()
                        ->info()
                        ->title(__('New User Registered'))
                        ->body(new HtmlString(__('A new user has been registered with the name <span class="text-sm font-semibold capitalize text-primary-600 dark:text-primary-400">:name</span>', ['name' => $user->name])))
                        ->broadcast($superAdmins);
                }

                broadcast(new NewUserRegistered($user));

                Log::info('New user registered', [
                    'user_id' => $user->id,
                    'email' => $user->email,
                ]);

            } catch (Exception $e) {
                Log::error('Error broadcasting new user notification', [
                    'error' => $e->getMessage(),
                ]);
            }
        }
    }
}

routes/channels.php

<?php

use App\Enums\UserRoles;
use App\Models\User;
use Illuminate\Support\Facades\Broadcast;

Broadcast::channel('new-user-created', function (User $user) {
    return $user->hasRole(UserRoles::SuperAdmin->value);
});

echo.js

import Echo from "laravel-echo";
import Pusher from "pusher-js";

window.Pusher = Pusher;

window.Echo = new Echo({
    broadcaster: "reverb",
    key: import.meta.env.VITE_REVERB_APP_KEY,
    wsHost: import.meta.env.VITE_REVERB_HOST,
    wsPort: import.meta.env.VITE_REVERB_PORT ?? 80,
    wssPort: import.meta.env.VITE_REVERB_PORT ?? 443,
    forceTLS: (import.meta.env.VITE_REVERB_SCHEME ?? "https") === "https",
    enabledTransports: ["ws", "wss"],
});

window.Echo.private("super_admin_notifications").listen(
    "NewUserRegistered",
    (e) => {
        console.log("New user registered:", e);
    }
);