On the other hand, Naruto could also be determined to prove his innocence or change their minds. He is a very persistent character. He might go on dangerous missions alone to show his worth and loyalty to the village and hope that Team 7 will see that he is still the same Naruto they once knew and liked.
Naruto might initially be very confused. He has always considered Team 7 as his friends, so the sudden hatred would be hard to understand. He could try to talk to them to find out what's wrong, but they might just ignore him or be hostile.
Naruto might initially be confused. He has always looked up to Sarutobi as a respected elder, so being hated by him would be unexpected. He would probably try to find out why Sarutobi hates him. For example, he might go to Sarutobi and ask directly, hoping for an explanation.
Naruto could also get really sad and start to doubt himself. He might think that he did something terribly wrong, even if he didn't. And he may try to change himself to win back their friendship, like suppressing his usual exuberant personality.
He could try to fight back against this hatred. Naruto has a strong will. Instead of just accepting being hated, he might try to prove everyone wrong. He could start by doing good deeds secretly or try to expose any false rumors that are causing people to hate him.
At first, Naruto might be really confused. He's used to thinking of his friends as his support system, so when they turn on him, he doesn't understand why. He'll probably try to talk to them, to ask what he did wrong. If they don't listen, he could become really sad and withdrawn. Maybe he'll start training even harder, using the pain of being rejected by his friends as motivation to become stronger.
Naruto could also feel a bit sad and lonely. He's used to being an outcast in the village, but he thought Team 7 would be different. So he might start to question himself. Maybe he'd start training on his own more, trying to become stronger so that they would have to notice him. And he might also try to find other friends outside of Team 7 to fill the void.
He could also get angry. Naruto has a strong sense of justice and loyalty. So, being betrayed might fuel his anger, and he could set out to prove his innocence on his own. He might go on a journey to find evidence that clears his name and also to become stronger so that he can face his former teammates if they become enemies. He might also start to rely more on other friends outside of Team 7, like Shikamaru or Rock Lee, who might believe in him from the start.
Naruto might also be determined to change his brother's mind. He would keep showing his good side, like his kindness and his strong will to protect the village. He could think that by being a better person, his brother will eventually stop hating him. He may even go through some tough training to prove himself not only to his brother but also to the whole village. And in the process, he may face a lot of difficulties and rejections from his brother, but he won't give up easily.
At first, Naruto would be extremely hurt. He has always considered Team 7 as his family, so their betrayal would be a huge blow. He might go into a state of shock and disbelief.
One possible reason could be misunderstandings. Naruto is a bit of an outcast at first, and his brash personality can be misinterpreted. In fanfiction, the team may misjudge his actions as being self - centered when in fact he's just trying to prove himself. This could lead to them hating him.
Naruto would probably be extremely hurt and confused at first. He would try to talk to his teammates, to understand why they are doing this. He might plead with them, asking them to remember their past together. But when he realizes they won't listen, he could become angry. Naruto has a strong will, so he would likely decide to prove his innocence on his own, vowing to show Team 7 that they are wrong.