Yep, yep, yep.
I like the Sasuke I write in my fics. Complicated, but not cruel. At least not to Sakura. And even his bad traits aren't so bad that you hate him - he has redeemable qualities.
But in the manga, he's more like Itachi. Cold and cruel to everyone. Even Naruto, but especially to Sakura. There is no one Sasuke bonded to, no one he trusted, no one who was his friend.
Shippers who see something in him are pulling from their own image of him. Which is totally fine. But the black-and-white facts of him in the manga prove just how bad he is.
This applies to Naruto as well!! There is nothing in their relationship that gives Naruto a reason to act the way he does toward Sasuke. Sasuke was just a little less-of-an-kitten to him when they were kids, and now Naruto is obsessed with saving him for the rest of their lives. Naruto, like the Sasuke shippers, sees something in him that was never there to begin with. A version of Sasuke that was never there to begin with.
Way I saw it, Naruto just didn't want to see Sasuke suffer since he himself is a very empathic person, and which is something I show in my fanfic from what I've done so far, since even if he kept his promise to stop Sasuke from going to Orochimaru... he still feels he hasn't been able to "save" him. It isn't just about seeing something that was never there, it is seeing that Sasuke is a valued teammate and that even if he could deny it, he DID like his time in Team Kakashi.
Heck, for how I did Sasuke with him in TDW initially, he's cruel and malicious because he's angry, angry he was denied the means to get power to kill Itachi, since I wrote his motivations simply, even if not fully shown to anyone but can be obviously hinted, that he just wants to kill Itachi not really fully for revenge, but motivations of jealousy towards Itachi, given what the series has said about how Sasuke OBVIOUSLY was always jealous of Itachi, due to the praise he kept getting from their father (even if Fugaku only did it because he wanted to have Itachi's power for the Uchihas' coup), and how others kept comparing him to Itachi and how that developed a superiority-inferiority complex, especially after the massacre and how everyone basically kissed Sasuke's ass, even when he was a total asshat to people, just because he was good and because he was the last known Uchiha.
I also focus his character being that once he lets go of that anger, that ego, that inability to deal with someone stronger than him... he'd be trying to become a better person, finding his way to "the dawn", and to be able to find the truth of what Itachi did, especially when there's a lot more I want to do regarding that, especially around the Uchiha massacre and how to connect it to Madara Uchiha himself, since he would be the principal villain of my fanfic.