You're not stuck in elo hell. This concept has been beaten to death time and time again, and is disproven by the existence of boosters. How can they take control of an account supposedly stuck in elo hell and suddenly climb and break out?
Try not to tunnel on statistics, as they can be deceptive. Someone who goes 8-0 but only sits botlane and kills their laner over and over looks like they had a great game, but if they never left bot lane and refused to group to get those kills, they were a detriment to their team.
As to your suggestion, I disagree for two main reasons. The first being that almost always its just one bad game. I went into your match history to see if anything caused you to write this post, and I saw a recent game where your jungler went 0-8, which funnily enough is the exact number you used in your post. To prove my point, i went to his page. His previous 3 ranked games to the one he had a bad game in was: 10/5, 7/1, and 19/5. He knows how to play, and a video would do nothing but be irritating and condescending. He just had a bad game.
The second reason I disagree is that besides very basic mechanics, the game changes all the time. A couple metas ago, freezing was a great tactic that would be used a lot to create advantages. In todays meta, now shoving the wave and grouping is the way to gain significant advantages. Anything you put in the video will become outdated, and will end up like the tutorial recommending thornmail on Ashe. They feel bad about doing poorly, there is no need to punish them more.
