Lol why are you going into this drivel.
Yes, Orochimaru wants the sharingan and the only ones who can unlock the true power of a sharingan is an Uchiha.
Orochimaru still had options when he was defeated by Itachi—his goal of gaining the sharingan was not lost, ergo he did not lose any will or lack willpower to achieve it. Itachi was one of multiple avenues to obtain it, so Orochimaru's ambition shifted over to Sasuke, because these individuals do not matter besides their potential (and as it turns out, Orochimaru confirms Sasuke has greater potential than Itachi in their first encounter).