you know, maybe I'm wrong, but my interpretation of Anakin/Vader and Redeemed Anakin is that he pretty much is aware he's terrible. He pretty much thinks of himself as a monster even before becoming Vader, he considers himself one as soon as he had to leave Shmi to survive as a slave alone while he got to become The Chosen One and travel the stars (his basic understanding of love is self-sacrifice), he knows the tusken massacre was bad, he knows murdering disarmed Dooku was bad; he knew turning against the jedi and helping Palpatine was bad; he's extremelly self aware of his violence and hates himself for it.
I think it's easy to think of him as nonchalant or as sort of a shameless dick about it all because his General At War Persona was to be jokey and pretend he's having fun. He's very confident on his ability for Murder (tm), he (tragically) became one of the Best general jedis in the order by becoming good at murder, he's useful when he's being murderous at the right people; so he has no doubts on his abilities on this regard; that doesn't mean he isn't aware of how fucked up and cruel it is, but he keeps doing it, and it's all he knows; he was born in violence, raised in violence, taught to yield a extremelly dangerous weapon, groomed into violence, rewarded for violence, cheered for violence, with Ahsoka then he had to teach violence, and then violence just became something that ran in his blood, it came to him easily, too easily because he was never given the means to deal with such a extreme hyperviolent paradigm. So yep, he knows he's good at murder and little self-preservation.
And he probably despised himself for it, he saw himself as less than a being with human rights, he saw himself as a weapon and he hated not being seen as a person, and at some point he became apathic about it, the fight left him as soon as he had no future with a family. As Vader his hate and anger is just cold fury, is mostly apathy and a void of emotions, there's just pain and self-disgust and regret and old anger, there's not even trying to be something else anymore, it's all he's ever been good at and all he's being asked to do.
So redeemed Anakin (which canonically just means Ghost Anakin lmao) acting oblivious or playing the dumb or victim card it's just something I can't even imagine him to do; like Anakin is aware of being violent and messed up and Bad, but he is completely unable to concieve the idea of having been a victim because besides violence, Anakin's other big trait is that he never ever processes trauma and he horrifically has a history of blaming himself instead of the people who owned him.
This guy, when he was at his best as a Jedi, was pathologically prone to suicidal missions even when it wasn't a necessity, he thinks he's an asset, a means for his superiors to impose their stance and chose to own it, instead of blaming his superiors he just hates himself because he can't stop pathetically reliving when he left his mom behind, when he carried her corpse, when he retaliated against even innocents including kids, when he hurt Padmé, all the times he failed, and the he lived in his personal, fitly created just for him, inferno and had no plans to escape it until one certain sunshine farmer showed up, and all because he thinks he deserves the torture and the abuse and being owned because he's just good at murder and nothing else.
So yeah, no one probably hates him more than himself. Someone could tell Ghost Anakin he's a monster, the worst thing that ever happened in the galaxy and he would say "Yes." And no attempts at arguing or whatsoever, his dignity couldn't be lower if he tried, he would half-heartly agree if someone like Luke said the emperor did him wrong by, y'know, torture him? But then he would also say something like "Well, yes, but cruelty is the way of the Sith, what else could be expected", he's just terribly messed up and couldn't stop himself from defending, at least a little, his literal groomer and abuser and master, and he certainly won't expect forgiveness, like,,,,at all. He can, and will, make excuses for people directly hurting him, but he also would retaliate in terrible ways against anyone, guilty or not, if it meant doing it for someone he cared about.
So Anakin is just...used to being used, and falls easily into being used because it's what he knows best, freedom feels useless and uncertain after he lost padmé.
It's an increíble vicious circle: He worked himself hard to be useful because being useful it's what makes people like him and a means of survival, he then hates himself for being just useful and loosing his personhood, and because he hates himself and thinks he doesn't deserve any sort of...human rights, he keeps on being a mere weapon, an object, but what a good and expensive weapon at least, repeat.
So nope, this guy would be completely unable to even dare to play the victim or excuse himself, even less act as if he doesn't understand he did wrong.