Greasy Fork is available in English.
Hover a thumbnail on youtube.com and click an icon at the right: "Not interested" and "Don't recommend channel"
< Feedback on YT: not interested in one click
Fixed in 1.0.6.
Thanks for the quick response, appreciate it, keep up the good work.
Dont know if this is the right place, but found a conflict with a extension - blocktube - when it is installed it stop the script from showing the icons.