Luke Skywalker indeed meets his end in the original comics. The circumstances surrounding his death add depth and complexity to the Star Wars narrative.
Luke Skywalker doesn't make an appearance in Solo: A Star Wars Story. The focus of the movie is on Han Solo's early adventures and other characters related to that storyline.
I really like the fanfic 'Luke Skywalker: The Hidden Years'. This one focuses on the time between the movies that we don't really get to see much of. It shows Luke's personal growth and his attempts to understand the Force better on his own. He has some amazing adventures and meets some unique characters that add a lot to the story.
There could be a fanfiction where baby Luke Skywalker is visited by a mysterious Jedi in his dreams. This Jedi gives him some sort of premonition or a message about his future. It could be a Jedi who was friends with his father and is trying to guide Luke from afar, even at this young age.
Some fanfictions depict Dark Luke Skywalker in an alternate universe where he turns dark much earlier in his life. Maybe due to a different event like the death of Obi - Wan Kenobi in a more brutal way during their first encounter. This changes his entire trajectory and he becomes a powerful and feared Dark Lord, causing chaos across the galaxy.
One common theme is gender - role reversal. Since Luke is female in these fictions, it often explores how she challenges the male - dominated Jedi culture. For example, she might face different expectations from the Jedi Council.
One of the best is 'The Thrawn Trilogy'. In these stories, Luke has really grown into a powerful Jedi. He faces new threats and his character development is quite engaging as he tries to keep the New Republic safe.
A good 'Star Wars Luke Skywalker Fanfic' should stay true to Luke's character. For example, his determination and his strong connection to the Force are key elements. If the fanfic has him acting out of character, it just doesn't feel right.