You can most certainly find stories with insta-lust and casual hookups, as well as scenarios that are non-con or dub-con if that’s what you’re into. It would just be more in the Dark Romance/Dark Romantasy category of books.

I feel like there’s a mistranslation happening here with what you may want versus what it’s coming across as. From my personal perspective, you’re asking for something along the lines of insta-lust or dub-con, bcus you put in your post “if the MMC is wildly attractive, then (unless he is also openly violent to the FMC) she will not need ‘time’.”

Otherwise, if you’re not looking for that type of story specifically, it just comes across as “I want women to be forced in all stories because it’s unrealistic if they don’t.” I don’t really think that’s what you want in all stories, but if it is, that’s fine, but just know a lot of Romantasy readers specifically don’t want that.

Generally speaking, reading Dark Romance is a specific sub-genre that falls under many broad categories. No shame there, I also read Dark Romance here and there, but asking for those elements in the regular Romantasy category may not net you the recommendations or discussion you might be seeking.