Solucionado
Consiguir resolver, fiz isso:
<?php
require 'vendor/autoload.php';
use GuzzleHttp\Client; use Symfony\Component\DomCrawler\Crawler;
$client = new Client(['verify' => false]); $resposta = $client->request('GET', 'https://www.alura.com.br/cursos-online-programacao/php');
$html = $resposta->getBody();
$crawler = new Crawler(); $crawler->addHtmlContent($html);
$cursos = $crawler->filter('span.card-curso__nome');
foreach ($cursos as $curso) { echo $curso->textContent . PHP_EOL; }