Orochimaru wanted Xia Lingan with all his heart, but he didn't attack Kakashi. What is the reason?

Speaking of orochimaru, a mad scientist in Naruto, he has made great contributions. He is the one who longs for sharingan, and he is the one who longs for sharingan. Why doesn't he start with Kakashi? First of all, let me talk about Kakashi, the genius of Muye Village. He got sharingan only for special reasons, and he finally turned sharingan into big eyes. I think this is very powerful. Tell me why.

First: orochimaru thinks this is a fake.

Orochimaru actually had a chance to attack Kakashi, but he chose not to do so, but focused on Sasuke. I think the first reason is that sharingan of Kakashi is an impostor. Although Kakashi was no match for orochimaru at that time, and as Kakashi, Kakashi's talent was not weak, orochimaru just disdained him.

Second: orochimaru is a perfectionist.

Orochimaru is a perfectionist. What he wants is Uchiha Itachi's body. When he finally makes efforts and finds that his own strength can't beat this person, he has to put his thoughts on Sasuke's head, while sharingan of Naypyidaw has the opportunity to evolve into a round-trip eye. In his pursuit of perfection, I think this is the second reason why he despises sharingan of Kakashi. Want the best.

Having said all this, it's strange that orochimaru still didn't get sharingan. If it weren't for these reasons, I think he would have got the share he has been longing for. Actually, I'm looking forward to it