How to create and use Custom helper function in Laravel

There are so many build in helper function we are using like

return view('employee.index');
$converted = Str::lower('LARAVEL'); // laravel

Steps:
1. Create Helpers folder inside app folder, where we keep file which contain helper function
2. create Helper.php file inside Helpers folder

3. if (! function_exists('myCustHelperFunc')) {
           function myCustHelperFunc()
           {
           return "helper function is called"
           }
           }
   

4. go to composer.json and add or update in autoload object

   "autoload": {
   "files": [
   "app/Helpers/Helper.php"
   ],
   "psr-4": {
   "App\\": "app/",
   "Database\\Factories\\": "database/factories/",
   "Database\\Seeders\\": "database/seeders/"
   }
   },
           }
   

5. composer dump-autoload ==> run this command on terminal
6. use function name any where like myCustHelperFunc();