Fetching textfield values from DB (Symfony5)

I’m in trouble and I need some help.

I’m currently working on Symfony 5.4 and I’m trying to make a dynamic landing page for a customer. I wanted to make the landing easily editable for the customer so he doesn’t need to write inside the home.html.twig. So I did a LandingPage entity with five textfields and five images.

I also did a LandingPageType, a LandingPageRepository and everything is controlled in the HomeController.

The thing is, I don't know how to fetch the textfield's DB values when editing with this type of configuration since there are no ID for each textfield.

Here's my edit function :

    public function landingEdit(Request $request, LandingPageRepository $landingPageRepository): Response
    {
        $landingPage = new LandingPage();
        $form = $this->createForm(LandingPageType::class, $landingPage);
        $form->handleRequest($request);

        if ($form->isSubmitted() && $form->isValid()) {
            $landingPageRepository->add($landingPage);
            return $this->redirectToRoute('app_admin_panel', [], Response::HTTP_SEE_OTHER);
        }

        return $this->renderForm('admin_panel/content/pages/landing.html.twig', [
            'landing' => $landingPage,
            'form' => $form,
        ]);
    }

If someone has an idea, that'd be awesome !

Thanks in advance!