Hey did you heard about childhood of Sasuke

Much of Sasuke's childhood was spent living in the shadow of his older brother, Itachi Uchiha, who had proven time and again that he was an extremely talented ninja. Because of Itachi successes, most of the members of the Uchiha clan looked to Itachi as the future of the clan, the most prominent proponent of this idea being Sasuke's father, Fugaku Uchiha. Due to this focusing on Itachi, Sasuke did what he could to prove himself to his family, though no amount of training could help him in surpassing the milestones set in place by his brother. Itachi, aware of Sasuke's struggle for recognition, tried to shift some of their father attention to Sasuke, even offering to train Sasuke in various fields of ninja abilities. Although Itachi succeeded in getting Fugaku to spend more time with Sasuke, much of that time was still dedicated Itachi, and all the while Itachi never lived up to his promises of training Sasuke.

As time went by, Itachi's standing in the clan began to falter, Itachi becoming increasingly less dependable with tasks and constantly having his trustworthiness called into question. At this time, Itachi also began to create a more competitive relationship with Sasuke, challenging Sasuke to surpass him. Because of Itachi's changing personality, Fugaku began to take a more active interest in Sasuke's development, teaching him the Great Fireball Technique in less time than Itachi had taken to learn it, which also gave Sasuke a proper membership into the clan. Most prominently, Fugaku encouraged Sasuke to not follow in Itachi's footsteps, the former prodigy of the clan having lost his father's confidence.

Soon after receiving the attention from his father that he had so yearned for, Sasuke returned home one day to find all the members of his clan dead, each murdered by Itachi. After finding Itachi standing over the bodies of their parents, Sasuke was forced to relive the murder of his parents through Itachi's use of his Mangekyo Sharingan. As Sasuke writhed from the visions he had seen, Itachi informed him that he wasn't worth killing. As he left, Itachi repeated his encouragement to Sasuke to get strong enough to surpass him, and disappeared into the night. From that day forth, Sasuke lived as an orphan, longing for the parents that had been taken from him and allowing his brother's words to fester. Soon after the clan's annihilation, Sasuke's only goal in life became to gain power through any means necessary, then kill Itachi to avenge the clan