searchBar in nav Symfony 5.4 - php

Question

I'm a beginner ;)
I'm trying to have a searchBar form in a navbar located in base.twig.html, searching for the game just by it's name.
But i can't get any results when typing in the form in navbar. The functions in repo and controller are correct, I checked it with "dd".
This is my controller:
[Route('/search/SBresult', name: 'app_search')]
public function searchBar(Request $request, EntityManagerInterface $entityManager, string $Nazwa='Nazwa'):Response
{
$form = $this->createFormBuilder([])
->add('Nazwa', TextType::class, ['required' => false, 'label' => 'wpisz nazwę gry',
'label_attr'=> ['class'=>'text-white ps-3'], 'attr' => ['class'=>'form-control form-
control-lg']])
->getForm();
$form->handleRequest($request);
if ($form->isSubmitted() && $form->isValid())
{
$Nazwa = $form->get('Nazwa')->getData();
//dd($Nazwa);
$Gry = $entityManager->getRepository(Gra::class)->findGra($Nazwa);
//dd($Gry);
return $this->render('search/SBresult.html.twig', ['Gry' => $Gry]);
//return $this->redirectToRoute('app_search', ['Gry' => $Gry], Response:: HTTP_SEE_OTHER);
}
return $this->render('search/searchBar.html.twig', ['form' => $form->createView()]);
}
I have a template search/SBresult.html.twig with a proper {% for Gry in Gry %}
And this is how I render the form in base.twig.html:
{{render (controller('App\\Controller\\SearchController::searchBar'))}}
I think that the problem lies in rendering the form in a navbar, because I've already made a searchform with many options to choose, exactly the same way, and it works. But this form is rendered in its own template, not in base.
What should I do to get the results from the searchBar in base.twig.html?