Hostinger - Laravel - Shared hosting

I have a Laravel 9 App that I deployed on hostinger shared hosting.

My site files look like this public_html/laravel-app.

In public_html file I don't have an index.php file to change the required bootstrap linked to access the Laravel application.. So all requests currently look like this: domain/laravel-app/public/index.php/{ROUTE}.

How can I fix it so it looks like: domain/{ROUTE}?

First of all I give credit in this to @apokryfos, @user83129 and @andylondon. The solution was a combination of there help.

1. Step 1 was the .htaccess file for security as @andylondon said but should look like this (added laravel-app before public):

RewriteEngine on

# serve existing files in the /public folder as if they were in /
RewriteCond %{DOCUMENT_ROOT}public%{REQUEST_URI} -f
RewriteRule (.+) /laravel-app/public/$1 [L]

# route everything else to /public/index.php
RewriteRule ^ /laravel-app/public/index.php [L]

2. Step 2 I copied the contents of laravel-app/public to public_html
3. Step 3 I updated public_html/index.php to look exactly like this:

<?php

use Illuminate\Contracts\Http\Kernel;
use Illuminate\Http\Request;

define('LARAVEL_START', microtime(true));

/*
|--------------------------------------------------------------------------
| Check If The Application Is Under Maintenance
|--------------------------------------------------------------------------
|
| If the application is in maintenance / demo mode via the "down" command
| we will load this file so that any pre-rendered content can be shown
| instead of starting the framework, which could cause an exception.
|
*/

if (file_exists($maintenance = __DIR__.'/store-api-9/storage/framework/maintenance.php')) {
    require $maintenance;
}

/*
|--------------------------------------------------------------------------
| Register The Auto Loader
|--------------------------------------------------------------------------
|
| Composer provides a convenient, automatically generated class loader for
| this application. We just need to utilize it! We'll simply require it
| into the script here so we don't need to manually load our classes.
|
*/

require __DIR__.'/laravel-app/vendor/autoload.php';

/*
|--------------------------------------------------------------------------
| Run The Application
|--------------------------------------------------------------------------
|
| Once we have the application, we can handle the incoming request using
| the application's HTTP kernel. Then, we will send the response back
| to this client's browser, allowing them to enjoy our application.
|
*/

$app = require_once __DIR__.'/laravel-app/bootstrap/app.php';

$kernel = $app->make(Kernel::class);

$response = $kernel->handle(
    $request = Request::capture()
)->send();

$kernel->terminate($request, $response);

PS: laravel-app added in my answer is a custom name in which I named the directory containing my deployed Laravel app in public_html and can be changed according to each developer.