He adapts by using his natural resilience. Naruto has always been a fighter, so in fanfiction, he would quickly find ways to make the best of his situation. He might use his skills to get odd jobs at first to survive.
Naruto adapts to life away from Konoha in fanfiction by drawing on his past experiences. He's faced hardships in Konoha too, so he uses that knowledge. He starts to understand the local cultures and customs of the new place. He also tries to make friends with the locals, sharing his own stories (while being careful not to reveal too much about Konoha if needed). And he constantly trains to keep his skills sharp in case any threats come his way.
In fanfiction, Naruto's adaptation to life away from Konoha is a complex process. At first, he may feel lost without the familiar faces and structures of Konoha. But he soon realizes that he has the opportunity to create a new life for himself. He begins to learn from the new environment, whether it's new types of chakra or different ways of living. He also tries to build a new reputation, not as the 'Konoha hero' but as an individual with his own values and abilities. He may face setbacks, like not being accepted immediately, but his determination helps him keep going and gradually adapt.
One reason could be that he feels misunderstood by the villagers. Despite all he has done for Konoha, some still hold grudges or are afraid of his power. Another might be that he wants to explore the world on his own terms, away from the responsibilities and restrictions of Konoha. Maybe he also feels a sense of loneliness there, as he has lost many important people and the village constantly reminds him of those losses.
In fanfiction, Naruto's life away from Konoha could be full of self - discovery. He might meet new and strange people who don't know about his past in Konoha. He could learn different fighting styles and develop his skills in unique ways, without the constraints of Konoha's rules and expectations.
From a security perspective, Konoha would be weaker. Naruto is a very powerful ninja, and Hinata is no slouch either. Their skills and abilities would be missed. Enemies might see this as an opportunity to attack Konoha. Also, Naruto has been a symbol of hope for the village. His departure could lead to a decrease in morale among the villagers. They might start to feel less secure and more pessimistic about the future.
It would create a sense of panic. Naruto is a very important figure in Konoha. His strength has been crucial in protecting the village. Without him, the villagers would fear attacks from other villages or threats from the Akatsuki. For instance, if the Akatsuki knew Naruto had left Konoha, they would likely see it as an opportunity to capture him more easily.
His departure would definitely put a strain on his relationships. His close friends like Sasuke, if he is back in Konoha at that time, would have mixed feelings. They might worry about Naruto but also be a bit angry that he left without consulting them. Naruto's younger friends like Boruto would be confused and miss him a great deal, and this could lead to some distance in their relationships.
Well, in some fanfictions, Naruto might outsmart Konoha by using his unique knowledge of the village's secrets that others don't know. For example, he could use his understanding of the old tunnels under Konoha to his advantage in a situation where he needs to escape or gain an upper hand in a conflict.
Maybe he feels betrayed. In the original story, Naruto has faced a lot of discrimination in Konoha when he was young. So in the fanfiction, it could be that some similar or new issues make him decide to hide.
Another reason could be for the sake of protecting the village. Maybe he discovers some sort of threat that he believes he can only face by leaving Konoha. He doesn't want the village to be in danger because of him, so he runs away to draw the danger away from Konoha.
One possible reason could be that he felt misunderstood. In the village, Naruto was often ostracized despite his good intentions. Maybe he got tired of trying to prove himself and just ran away. For example, when the villagers still saw him as the nine - tailed fox rather than Naruto, it might have pushed him to leave.
In some fanfictions, Konoha may suffer due to powerful villains specifically targeting it. For example, a new and extremely strong dark ninja group could launch a surprise attack on Konoha, causing destruction and loss of lives among its shinobi. This could also lead to a breakdown in the village's infrastructure and a sense of fear and despair among the villagers.