Rendering data from a form to a another view in Symfony 5 - forms

Question

I am making several loan calculators in Symfony 5, all are in my controller SimulatorController.
The user is filling up / submitting a form in the View 1 and should land on View 2 where calculations results appear, along with a recpa of data entered in the form.
So I have a first function in my controller which creates the calculation form, make some calculations, render the form into the view 1 and redirects to View 2 once the form is submitted :
#[Route('/rachat-credits', name: 'app_rachat')]
public function rachat(Request $request)
{
// Debts rate
$form = $this->createForm(SimulDebtFormType::class);
$debtForm = $form->handleRequest($request);
if($debtForm->isSubmitted() && $debtForm->isValid()){
$wages = $debtForm->get('salaries')->getdata();
$bonuses = $debtForm->get('bonuses')->getdata();
$earnings = $debtForm->get('earnings')->getdata();
$expenses = $debtForm->get('expenses')->getdata();
$totalIncome = intval($wages + $bonuses + $earnings);
$rate = floatval($expenses/$totalIncome*100);
$debtRate = number_format($rate, 2,',',' ');
$rest = $totalIncome - $expenses;
$restToLive = number_format($rest,0,'',' ');
return $this->redirectToRoute('app_simul_res_endet');
}
return $this->render('Simul/rachat.html.twig', [
'debtrateform' => $debtForm->createView(),
]);
}
And a second function to render the View 2, which displays the results from the previous a form and create a contact form on it.
I don't manage to pass the retrieved and calculated data into the View 2, I tried to enter parameters in an array into redirectToRoute(), such as:
return $this->redirectToRoute('app_simul_res_endet', [
'debtRate' => $debtRate,
'restToLive' => $restToLive,
'totalIncome' => $totalIncome,
'expenses' => $expenses,
]);
but the View 2 did not recognized the variables.
<div class="row justify-content-evenly align-items-center text-center fw-bold m-3 endettement">
<div class="col-sm-6 col-md-4 rounded-3 p-4 mb-4 data">
<div class="row justify-content-around align-items-center fw-bold">
<div class="col-10 text-start">
<p>Mes revenus mensuels</p>
<p>Mes charges mensuelles</p>
</div>
<div class="col-1 text-end figures">
<p>{{ totalIncome }}€</p>
<p>{{ expenses }}€</p>
</div>
</div>
</div>
<div class="col-sm-6 col-md-4 results rounded-3 p-4">
<h3>Estimation de votre
taux d'endettement*</h3>
<h3 class="mensualite">{{ debtRate }}%</h3>
<h3 class="mt-4">Reste à vivre*</h3>
<h3 class="mensualite">{{ restToLive }}€</h3>
<button class="btn ctaWhite text-uppercase rounded-pill mt-4">Recalculer</button>
</div>
</div>
Anyone has a clue or advice on how to proceed?