Littlest Pet Shop "Three Journals" [fully lost]
There was an lps series on youtube from like 10 years ago about a "loser girl" named Tangy played by lps 156. She becomes friends with a popular girl named Maddie played by lps 77. Then Tangy's cousin (lps 21) comes over, he's super into scuba diving? He drowns near the end of the series and the girls save him after he doesn't come home. During the series, the main girl Tangy really likes some guy, i think his name was Zack, played by husky 341. But he stands her up on a date. There's a mean girl played by lps 816 that becomes nice at the end. In the middle of the series, Tangy has a dream where she's opera singing on a table that Maddie and the cousin is trying to carry down the stairs.
This was a really popular series in the lpstube community when it came out, if you search "lps the three journals" on Google images, you'll find fan art of it.
The creator of these videos was named Maddie Carr I believe. She has stated that she deleted these videos due to embarrassment from school bullies since she was in middle school when she posted these videos. She's already searched all her devices for these videos and can't find them anywhere. It's forever lost.