Unable to login as admin in laravel

I have used laravel default authentication by using composer require laravel/ui and I have copy the default authentication and made new table called admin so that I can login as admin I am able to register but I am unable to login

web.php

Route::get('/admin/login',[App\Http\Controllers\admin\Auth\LoginController::class,'showLoginForm'])->name('admin.login');
Route::post('/admin/login',[App\Http\Controllers\admin\Auth\LoginController::class,'login']);
Route::get('/admin/register',[App\Http\Controllers\admin\Auth\RegisterController::class,'showRegistrationForm'])->name('admin.register');
Route::post('/admin/register',[App\Http\Controllers\admin\Auth\RegisterController::class,'register'])->name('admin.register');

Logincontroller.php

<?php

namespace App\Http\Controllers\admin\Auth;

use App\Http\Controllers\Controller;
use App\Providers\RouteServiceProvider;
use Illuminate\Foundation\Auth\AuthenticatesUsers;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;

class LoginController extends Controller
{
    /*
    |--------------------------------------------------------------------------
    | Login Controller
    |--------------------------------------------------------------------------
    |
    | This controller handles authenticating users for the application and
    | redirecting them to your home screen. The controller uses a trait
    | to conveniently provide its functionality to your applications.
    |
    */

    use AuthenticatesUsers;

    /**
     * Where to redirect users after login.
     *
     * @var string
     */
    protected $redirectTo = RouteServiceProvider::HOME;

    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    {
        $this->middleware('guest')->except('logout');
    }

    public function showLoginForm()
    {
        return view('admin');
    }

    public function login(Request $request)
    {
        $this->validateLogin($request);

        if ($this->attemptLogin($request)) {
            return $this->sendLoginResponse($request);
        }
        return $this->sendFailedLoginResponse($request);
    }
    protected function sendLoginResponse(Request $request)
    {
        $request->session()->regenerate();

        $this->clearLoginAttempts($request);

        if ($response = $this->authenticated($request, $this->guard('admin'))) {
            return $response;
        }
//        if ($response = $this->authenticated($request, $this->guard()->admin())) {
//            return $response;
//        }
        return $request->wantsJson()
            ? new JsonResponse([], 204)
            : redirect()->intended($this->redirectPath());
    }

    public function guard()
    {
        return Auth::guard('admin');
    }

}

Registercontroller.php

<?php

namespace App\Http\Controllers\admin\Auth;

use App\Http\Controllers\Controller;
use App\Providers\RouteServiceProvider;
use App\Models\User;
use Illuminate\Auth\Events\Registered;
use Illuminate\Foundation\Auth\RegistersUsers;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Validator;
use App\Models\Admin;
class RegisterController extends Controller
{
    /*
    |--------------------------------------------------------------------------
    | Register Controller
    |--------------------------------------------------------------------------
    |
    | This controller handles the registration of new users as well as their
    | validation and creation. By default this controller uses a trait to
    | provide this functionality without requiring any additional code.
    |
    */

    use RegistersUsers;

    /**
     * Where to redirect users after registration.
     *
     * @var string
     */
    protected $redirectTo = RouteServiceProvider::HOME;

    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function showRegistrationForm()
    {
      return view('admin-register');
    }
    public function register(Request $request)
    {
        $this->validator($request->all())->validate();

        event(new Registered($user = $this->create($request->all())));

//        $this->guard()->login($user);

        if ($response = $this->registered($request, $user)) {
            return $response;
        }

        return $request->wantsJson()
            ? new JsonResponse([], 201)
            : redirect($this->redirectPath());
    }
    public function __construct()
    {
        $this->middleware('guest');
    }

    /**
     * Get a validator for an incoming registration request.
     *
     * @param  array  $data
     * @return \Illuminate\Contracts\Validation\Validator
     */
    protected function validator(array $data)
    {
        return Validator::make($data, [
            'name' => ['required', 'string', 'max:255'],
            'email' => ['required', 'string', 'email', 'max:255', 'unique:users'],
            'password' => ['required', 'string', 'min:8', 'confirmed'],
        ]);
    }

    /**
     * Create a new user instance after a valid registration.
     *
     * @param  array  $data
     * @return \App\Models\User
     */
    protected function create(array $data)
    {
        Admin::create([
            'name' => $data['name'],
            'email' => $data['email'],
            'password' => Hash::make($data['password']),
        ]);
    }
}

create_admin_tables.php

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreateAdminsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('admins', function (Blueprint $table) {
            $table->id();
            $table->string('name');
            $table->string('email')->unique();
            $table->timestamp('email_verified_at')->nullable();
            $table->string('password');
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('admins');
    }
}

via Chebli Mohamed