Can't redirect to dashboard after login in laravel

I am new to Laravel and I am using ajax validation in Laravel 10.

The issue is, the validation is working, when my login credentials are incorrect, but when i try to use valid credentials, it is not redirecting to dashboard, rather it redirects to the login page

Below is my controller:

public function loginUser(Request $request){
        $validator = Validator::make($request->all(), [
            'username' => 'required|max:50',
            'password' => 'required|min:6|max:100'

        ]);

        if($validator->fails()){
            return response()->json([

                'status' => 400,
                'messages' => $validator->getMessageBag()
            ]);
        }else{
            $user = User::where('username', $request->username)->first();
            if($user){
                if(Hash::check($request->password, $user->password)){
                    $request->session()->put('loggedInUser', $user->id);
                    return response()->json([
                        'status' => 200,
                        'messages' => 'success'
                    ]);

                } else{
                    return response()->json([
                        'status' => 401,
                        'messages' => 'Username or password is incorrect!'
                    ]);
                }
            } else{
                return response()->json([
                    'status' => 401,
                    'messages' => 'Uername not found!'
                ]);
            }
        }
    }

Routes:

Route::controller(AdminController::class)->group(function() {
    Route::post('auth.register', 'saveUser')->name('auth.register');
    Route::post('auth.login', 'loginUser')->name('auth.login');
});

Blade:

<script>
        $(function(){
            $("#loginForm").submit(function(e){
                e.preventDefault();
                $("#loginBtn").val('Please wait...');
                $.ajax({
                    url: '{{ route('auth.login') }}',
                    method: 'post',
                    data: $(this).serialize(),
                    dataType: 'json',
                    success: function(res){
                        if(res.status == 400){
                            showError('username', res.messages.username);
                            showError('password', res.messages.password);
                            $("#loginBtn").val('Login');
                        } else if(res.status == 401){
                            $("#login_alert").html(showMessage('danger', res.messages));
                            $("#loginBtn").val('Login');
                        } else {
                            if(res.status == 200 && res.messages == 'success'){
                                window.location = '{{ route('dashboard') }}';
                            }
                        }
                    }
                });
            });
        });
    </script>