You might enjoy the web novels Worm. The main protagonist is basically exactly the above, an antihero by necessity with an “evil” power. The book in general lends itself to grey morality, even for the heroes. The actual villains? Actual evil. The author likes to imagine unorthodox super powers and really makes the characters with them really sing.
Be warned though, it’s a web novel that is literally something like “normal” 20 books long. Besides a rare lurch or two, it’s also a surprisingly very good 20 novels.
Glad to see you already picked it up. I read it in “one sitting” over the a couple of months at a slow job. The start was painful, but added really good context to her character.
I cant speak to a Coil like villain that isn’t Coil in the books, but if you are were I think you are, there are many “cold blooded and amazing actions by an anti-hero, villain or hero with a plan” instances left in the book, many of them major plot points.
I cant say anymore without major spoilers, but if the above is your criteria, the books have some pleasant surprises for you if you finish them.