https://pavzi.com/youtube-watch-history-delete/
YouTube Watch History Delete? How to View & Clear/Delete YouTube Search History
To find a recently watched video that you want to view again, use the Watch History feature. YouTube has a specific search option that allows you to search for...
youtube watch historydeleteviewclearsearch
https://greasyfork.org/en/scripts/537622-youtube-watch-later-shortcut/versions?show_all_versions=1
YouTube Watch Later Shortcut - Version history
Add and remove current YouTube video to and from the Youtube Watch Later list using a keyboard shortcut.
youtube watch latershortcutversionhistory