One common plotline is Harry finding a surrogate family. It could be his friends like Ron and Hermione who become like his true family. They support him and give him the love and care he didn't get from his parents.
Well, it likely makes him more independent. He has to rely on himself more without parental support. He might grow up quicker, learning to fend for himself and make his own decisions earlier than he would have with loving parents.
A simple way is to change Harry's perception of his parents. For instance, if he finds out that they were involved in some not - so - noble deeds in their past, it would give him a reason to ignore them. He could then start to look for role models elsewhere, like among the outcasts in Hogwarts.
One possible 'Harry Potter ignored parents' fanfiction could be one where Harry, after learning some dark secrets about his parents, decides to distance himself from their memory. In this fic, he might focus more on his own identity independent of what his parents were like. He could start exploring magic in a way that doesn't rely on the legacy they left behind.
One popular 'Harry Potter Ignored by Parents' fanfic could be 'The Forgotten Boy'. In this fic, the author delves deep into how Harry copes with the emotional turmoil of being ignored by his parents. Another might be 'Alone in the Magic World' which shows his struggles in Hogwarts while constantly feeling the lack of parental support. There's also 'The Orphan's Struggle' that focuses on his journey to find his own identity despite the void left by his parents.
Yes, there might be some extremely dark and out - of - canon fanfictions out there with such a disturbing premise, but it goes against the general nature of the original story where Harry's parents loved him deeply. However, in the vast world of fanfiction, people can create all kinds of strange and often inappropriate scenarios.
One possible reason could be that he might feel abandoned. Growing up without them, he could resent the fact that they left him an orphan. He might think that if they were really so great, they would have found a way to survive and be there for him.
In the world of fanfiction, many readers have specific expectations based on the source material. Since J.K. Rowling created Harry Potter as a male, some fans may be less interested in a female version. Additionally, there might be a lack of exposure for Fem Harry Potter fanfictions. If they're not promoted well within the fan community, they tend to be ignored.
It might be ignored because it has a very unoriginal plot. Fans are looking for something new and exciting in fanfiction, not just a rehash of the original stories.
On a more magical level, reviving the dead is against the natural order of things in the wizarding world. This could attract unwanted attention from magical authorities or even dark forces. Some might see Harry's act as a dangerous precedent and try to either stop him or use his new - found power for their own evil purposes.