Scraping YouTube Comments Not Working

I'm currently trying to scrape the comments of a YouTube channel and I created the sitemap and selector but it won't load when I try to scrape.

Url: Rihanna Gives Her Mother the Surprise of a Lifetime | The Oprah Winfrey Show | Oprah Winfrey Network - YouTube

Sitemap:

Hi @ginger

As it looks the comments are rendered only after a scroll down is performed - therefore you should make 2 seperate scroll selectors; the first - to load comments at all; the second - to load additional comments.

Test results from Web Scraper Cloud: