Laravel redirect code 302 when submit form

I faced an issue where Laravel redirects me back to my form page after submitting the form.
I was trying to return my $request data to make sure I got the correct values.
But I ended up getting redirected back to the form.

Controller:

// ServiceController.php
public function saveServiceProgress(Request $request, $id)
    {
        $service = Service::find($id);
        
        $rules = $this->generateCustomRules($service);
        $request->validate($rules);
        $input = $request->all();
        return $request;
        // echo $input;
        // return view('services.edit', compact('service'));
    }

The form is a huge form with switch case, so I only show the form tag:

{!! Form::open(['route' => ['services.saveServiceProgress', 'id' => $service->id],'method'=>'POST', 'files'=>'true']) !!}

The form consists for dynamic input based on the id passed into the controller. It has text inputs and file inputs as well. So its a very complex form. Currently I chose the simplest version of the form to test the functionalities.

Please shed some light (and probably some code) to help me with my problems! Thanks a lot!!!

Update on route:

Route::post('services/submit/{id}', [ServiceController::class, 'saveServiceProgress'])->name('services.saveServiceProgress');

Update after fixing validator:
Managed to submit the form, now starts working on handling file upload. Thanks @Rwd and @mahmoud\ magdy for pointing out my validation issues!