YouTube Thumbnails and Titles are the greatest determinants of whether a video is successful or not.
why?
Because, contrary to what people say, they really do judge the book by the cover. If it has a "boring" or no cover at all, they are going to scroll past it right away, even if it contained gold inside.
Don't let any more clicks go to someone else, if you have a channel, lets chat, know more about what you do and from the wide collection of proven working thumbnails I have been collecting over the past year, create you not 1 but 3 for you to test out.
Test out just like big Youtubers like Iman Gadzhi do for maximum clicks.