So we all know that Sasuke does not have an arm. And after his fight, Sakura was saying something about making an arm out of Hashirama's cells. Thing is—Sasuke has the Rinnegan, and knows how to use it. So, he can use the Asura Path technique to get a new arm.
Sasuke decided not to have his arm replaced to atone for his sins.
Sasuke lost his arm during the final battle between him and Naruto. The two clashed their Chidori and Rasengan together, blowing an arm from each off in the process. Sasuke lost his left arm (above the elbow) and Naruto lost his right.
Sasuke Uchiha is a user of the famed Sharingan and although he lost his left eye, his right eye still gives him access to the powers of the Sharingan, such as copying Jutsu.
The reason is, Sasuke has literally half of Hagoromo's chakra. He already had Yin chakra from Indra's soul. When he met Hagoromo, he got yin part again and naturally, awakened only one rinnegan.
Not only did Naruto lose Kurama after the two of them had activated Baryon Mode to help keep up with the Otsutsuki, but Sasuke suddenly loss his Rinnegan when Momoshiki (who had awakened within Boruto's body after the fight) caught him by surprise and stabbed it out.
Maybe the other eye is only for Sharingan, or he can't have two Rinnegans because it might replace his Sharingan permanently. However, one thing is for sure: he might use Sharingan and Rinnegan at the same time in the future.
Uchiha lack the strong stamina needed to control the full power of two rinnegan, not unless they use outside means to enhance their bodies like. Hence why Hagoromo was needed to even awaken Sasuke's rinnegan and why Madara awakened it with Hashirama's cells.
The easiest way to say cheers in Japanese is with an enthusiastic kanpai! (sounds like "gahn-pie"). You may hear banzai! shouted at some point, but leave that for some frenzied moment later.
Rather than blaming others, making others wrong, or expecting other people or situations to change, instead each individual would realize that when you change, the world around you changes.