Greasy Fork is available in English.
Adds a list of check-boxes to the bottom-most of the left sidebar for toggling visibility. (items that can be hidden are: Explore, Subscriptions, Subscriptions list, Library, History, Your videos, Watch later, More from Youtube)
< Feedback em Hide Youtube left sidebar items
Script does not work on Firefox, even if I turn off and the actual script, uninstall and reinstall it, and turn off and on the Tampermonkey extension, all with refreshing.