如何修改 Laravel 自带注册功能

laravel 自带的注册功能，由于我需要加一个验证验证码功能，在验证其他之前
但是找不到地方修改

class RegisterController extends Controller
{
    use RegistersUsers;
    protected $redirectTo = RouteServiceProvider::HOME;
    public function __construct(Request $request)
    {
        $this->middleware('guest');

    }

    protected function validator(array $data)
    {

            return Validator::make($data, [
                'name' => ['required', 'string', 'max:255', 'unique:users'],
                'password' => ['required', 'string', 'min:8', 'confirmed'],
            ]);

    }