Well, if it's about finding 'a sad lifes fanfiction', first you need to figure out the fandom it belongs to. For example, if it's a fanfiction related to a popular TV show, you can look for fanfiction communities dedicated to that show. Then, use the key words'sad life' in their search bars. Sometimes, these stories can be really touching as they often explore the darker sides of the characters' lives.
One common theme could be loss. It might be the loss of a loved one, a friendship, or a dream. Another theme could be loneliness, where the characters feel isolated from the world around them.
Well, 'Merlin's Broken Heart' is another one. It focuses on a situation where Merlin is betrayed by someone he trusted deeply. The pain and sadness in his character are palpable throughout the story, and the author does an excellent job of making the readers experience Merlin's emotional turmoil.
A lesser - known but very touching 'naruto sad fanfiction' is 'Fading Hopes'. It tells a story where Naruto fails to achieve his long - held dreams despite all his efforts. The story is full of emotional moments that will make you feel for the character on a deep level.
There's also 'Snape's Solitude'. In this fanfiction, it focuses on Snape's lonely existence at Hogwarts. It shows how he copes with his past mistakes and the pain of being misunderstood. It's a rather melancholy take on his character that will surely tug at your heartstrings.
A rather well - known 'Tim Drake sad fanfiction' is 'The Weight of the Cape'. Here, Tim is faced with self - doubt and the pressure of living up to the Batman legacy. The author does an amazing job of depicting his internal struggle and the resulting sadness. It's a must - read for any Tim Drake fan who likes more emotional and in - depth stories.
Well, 'Sorrow in Naruto's Harem' is also quite interesting. In this fanfiction, the harem aspect is combined with sad plotlines. For example, some of the female characters in Naruto's supposed harem have to deal with unrequited love or difficult choices, which leads to a lot of sad and emotional scenes.
Another one is 'Fading Memories of Sirius Black'. It's set after his death and how the people around him, especially his friends, deal with the loss. The way it describes their grief and how they remember him makes it a truly sad and poignant piece of fanfiction.
One sad Danny Phantom fanfiction is 'The Lost Soul'. In this story, Danny loses his best friend in a tragic ghost battle and has to deal with the overwhelming guilt and loneliness. It really tugs at your heartstrings.
There's a fanfiction called 'Broken Promises'. In this story, Ron makes a promise to Hermione that he can't keep due to unforeseen circumstances, and it leads to a very sad and complex situation between them. It's full of emotional turmoil. Also, 'Silent Tears' is a story where Hermione has to make a difficult choice that leaves Ron heartbroken, and the way it's written really tugs at the heartstrings.
One place to look for such fanfiction could be on Archive of Our Own (AO3). They have a large collection of fan - made stories. Just search for 'tails and cosmo sad' and you'll likely find some interesting reads.