Ai-chan can't say whether your statement is right or wrong. It is your interpretation. If you believe that is the kind of villain protagonist you want to make, then that's your right to write it.
However, in Ai-chan's opinion, a villain protagonist should be clear cut villain, either from the start to the end or gradually changing. You don't have to keep showing that he's evil the whole time, but the readers should be made aware that the protagonist is on the villain side and is aware that what he's doing is bad.
In Ai-chan's story, In Service of Evil, the protagonist Samantha (or Sarah, Ai-chan hasn't finalized her name) is a maid and servant of an eldritch horror. Her moral values are slowly corroded through acts that she herself would deem evil but she knowingly did it anyway as with every bad deed that she did, it desensitized her, following the lines of "I've already done ****, doing **** is not a big deal in comparison." But if she had compared what she's currently doing with the bad thing she was told to do at the start of her employment, she would've realized how much worse her current task is. In this case, she is gradually turning evil to match her master.
So in this case, is she a villain protagonist or is she a manipulated protagonist?
