having problem with send data and redirect in Laravel 9

I am trying to build an e-commerce site using Laravel 9 with breeze starter kit. And now working on the order process but something I don't understand happening.

On the order page, I sent form data to Controller using Axios. But then after got the result, the page reloaded with the form data as get parameters, like this.

I sent post data on https://my.doman/order/123/4
The page reload like  https://my.doman/order/123/4?user_id=someone&phone=1234-5678&amount=500

I don't understand why this is happening.

Here is my source code below.

• customer-info.blade.php only the sending data part.

function saveOrder() {
  const form = document.querySelector("form");
  const formData = new FormData(form);

  const url = `{{ route('order.store') }}`;
  axios.post(url, formData)
  .then((res) => {
      console.log(res);
       if (res.status === 200) {
        alert("success");
        location.href = "/order/shipping/123/4";
      }
  })
  .catch((err) => {
    console.log(err);
  });
}

• OrdersController.php

    public function preCreate($id, $quantity)
    {
        $product = Product::find($id);

        return view('customer-info')->with('product', $product)->with('quantity', $quantity);
    }
    public function create($id, $quantity)
    {
        $product = Product::find($id);

        return view('shipping-method')->with('product', $product)->with('quantity', $quantity);
    }

    public function store(Request $request)
    {
        $data = [
            'user_id' => Auth::user()->id,
            'phone' => $request->phone_receiver,
            'zipcode' => $request->zip,
            'address1' => $request->address1,
            'address2' => $request->address2
        ];
        $res = UserAddress::create($data);

        $data = [
            'user_id' => Auth::user()->id,
            'user_address_id' => $res->id,
            'total_amount' => $request->total_amount
        ];
        $res = Order::create($data);

        Log::info(response()->json(['result' => 'success']));   <-- checked here, it was success.

        if (empty($res)) return response()->json(['result' => 'fail']);

        return response()->json(['result' => 'success']);
    }

• route/web.php

Route::group(['prefix' => 'order'], function () {
        Route::get('/{id}/{quantity}', [OrdersController::class, 'preCreate']);
        Route::get('/shipping/{id}/{quantity}', [OrdersController::class, 'create']);

        Route::post('/store', [OrdersController::class, 'store'])->name('order.store');
});

I don't understand why all the data is returned as URL parameters. Which part of my code works like that? And why the location.href part never works even the res.status part is confirmed 200 successfully.

Please anyone help me to figure out what's wrong here?