https://chrome.google.com/webstore/detail/video-speed-controller/nffaoalbilbmmfgbnbgppjihopabppdk?hl=en

And it says it is installed in Opera, but when I open youtube, it does not work. I have checked and I have allowed it on all sites, but it still does not work. In fact, I've given it all permissions (allow in incognito, allow access to file URLS, allow access to search page results) and yet it still wiill not work.

I've disabled blocking ads and disabled blocking trackers.