What could be the reasons for Harry Potter to quit potions in fanfiction?

Another reason could be negative feedback. If they received a lot of criticism from the readers, such as complaints about the plot not being true to the original spirit of Harry Potter or the characterizations being off. This continuous negative response might have made them lose their enthusiasm and finally quit caring about writing the fanfiction.

One possible reason could be that the writers lost interest in the Harry Potter fandom. Maybe they found other fandoms or stories more appealing.

Perhaps there is some external threat or danger related to Quidditch. Maybe there is a dark wizard who is targeting Quidditch players and Harry doesn't want to put himself or his friends in danger. He has already faced so many threats in his life that this additional risk related to Quidditch might be too much for him.

Perhaps he was extremely tired or stressed. Harry has a lot on his plate, with Voldemort constantly being a threat and all the schoolwork and Quidditch. He might not have had enough sleep or rest, and the potions class was just the tipping point where his body gave out.

Maybe Snape wants to train Harry better. By using potions to change Harry's abilities or characteristics, he can expose Harry to different challenges and make him a stronger wizard. For instance, if he gives Harry a potion that temporarily takes away his ability to use magic, Harry will have to learn to rely on other skills.

One reason could be that he's facing extreme pressure in potions class. Maybe he's constantly compared to others, like Snape always having high expectations of him. Another reason might be that he has some kind of emotional turmoil related to his past traumas while in the potions environment. For example, the smell of a certain potion might remind him of a difficult time at the Dursleys.

Maybe he was poisoned. There could be someone who slipped a harmful potion ingredient into his cauldron without him noticing. It's a common plot device in fanfics to create drama.

Well, it could be about a new student who has an extraordinary natural talent for potions. Maybe they come from a non - magical family but their skills in potions far exceed those of their classmates. They might discover a new potion formula that has been lost for centuries and use it to save someone from a deadly curse.

The grading system in this fanfiction's potions class could be different. Instead of the usual strict letter grades, it could be more focused on improvement and creativity. So, a student who comes up with an innovative way to make a potion, even if it doesn't turn out perfectly, could still get a high mark. Also, group projects could be a major part of the class, promoting teamwork among the students which was not always emphasized in the original potions class.

Well, in a different potions lesson in Harry Potter fanfiction, perhaps the ingredients could be different. Maybe instead of using asphodel in a potion, they use a fictional plant that has unique magical properties. It could lead to new and unexpected effects of the potions.