One possible plotline could be Naruto's search for his parents' identity. Even though they abandoned him, he might be curious about who they were and why they left. He could go on a journey, following small clues he discovers along the way. Another plotline could be his struggle to fit in the village. Without the idea of his parents being heroes of the village, he might face more discrimination than in the original story.
A plotline could revolve around Naruto finding a substitute family. He could meet an older ninja who takes him under their wing, but this relationship could be rocky as Naruto has trust issues due to being abandoned. Or, there could be a plot where Naruto discovers that his parents had no choice but to abandon him, perhaps because they were being hunted by a powerful enemy. This could lead to a revenge plot against that enemy.
The fanfic could also have a plotline where Naruto isolates himself from the village. Feeling unwanted, he could run away and try to make it on his own in the outside world. But he would soon realize that he needs human connection. So he returns to the village, but with a new perspective. He could then start to work towards changing the village from within, to make it a place where no child would ever feel abandoned like he did.
One possible plotline could be Naruto growing up on his own, but then discovers some hidden secrets about his parents that change his perspective. Maybe he finds out they had no choice but to leave him. Another could be that Naruto, after feeling abandoned, decides to prove himself to the village in an even more extreme way, like taking on super dangerous missions at a young age.
One possible plotline could be Naruto growing up on his own, learning survival skills in the streets of Konoha. He might become more distrustful of others at first. Another could be him seeking out his family's secrets on his own, leading to unexpected adventures. Maybe he'll find a new family in his friends, like Sasuke and Sakura, who support him in ways his biological family didn't.
A possible plotline is that Naruto gets adopted by a group outside the village. He grows up learning their ways and becomes a sort of outcast from Konoha. Then, he could return to the village with a different set of skills and a new perspective. Or, he might develop a vendetta against Konoha for allowing his abandonment and try to take revenge in some way.
Maybe in the fanfiction, Obito makes a deal with an enemy that Naruto sees as a betrayal. So Naruto, with his strong sense of loyalty to the village and his friends, decides to abandon Obito. This could lead to a series of events where Obito tries to redeem himself in Naruto's eyes.
One possible plotline could be Naruto exploring his parents' memories in the mindscape. He might discover secrets about their past, like how they met or their early days as shinobi. For example, he could find out about his father's training and how his mother came to be a jinchuriki. This could lead to Naruto gaining new powers or a deeper understanding of his heritage.
One possible plotline could be that Minato and Kushina raise Naruto as a normal child in Konoha. Naruto would grow up with their love and guidance, which would significantly change his personality. He might be more confident from the start and not have that intense need to prove himself. Also, Minato could train Naruto personally, and Naruto might inherit his father's skills much earlier, leading to different adventures and battles in the ninja world.
In the fanfic, Naruto could die from an unexpected illness. His parents, who have been watching over him in spirit, are devastated. They might try to find a way to communicate with the living to tell them how special Naruto was. The mourning process could involve them seeing how the village comes together to remember Naruto, with his friends and comrades sharing stories of their adventures together. This would make his parents realize the kind of person Naruto had become and how much he meant to everyone.
A plotline could involve Naruto being disowned and then finding out that his parents were actually being controlled by an enemy. He then has to decide whether to forgive them or not while also dealing with the new threat. Or perhaps Naruto is disowned and he starts to form his own ninja group of outcasts, fighting against the traditional ninja villages that shunned him. This could lead to a whole new set of power dynamics and battles.
In the 'sakura abandoned by team 7 fanfic', a likely plotline is that Sakura becomes a target because of her separation from Team 7. Enemies might see her as an easy target or a way to get back at Team 7. She has to fight not only for her survival but also to clear her name, as rumors might spread that she was abandoned for being a liability. As she battles these adversaries, she uncovers secrets about her own past and abilities that she never knew before, and this new knowledge helps her rise above the situation.
Perhaps Naruto starts to question his own identity. Since he was abandoned by his family, he could be on a journey to discover his true heritage and in the process, his dark side grows as he faces many hardships and betrayals. He may then use his new understanding to either wreak havoc or find a way to forgive and move forward.