Carbon laravel add days

 syntax: Carbon::createFromDate($date)->addDays(add_days)->format("Y-m-d");

<?php

namespace App\Http\Controllers\Test;

use Carbon\Carbon; 

class TestController extends Controller

{

public function carbontest()

    {

        $mydate = '2022-08-19';

        $addDay = Carbon::createFromDate($mydate)->addDays(4)->format("Y-m-d");

        return $addDay;

    }

}

OUTPUT