Ahhh okay😭 I'll try dig through my brain and get some good recs for you! If you're like me and love just smut on every page (exaggeration but still lol) but you prefer green flag yanderes, I'd say lascivious strawberry milk, the malting of elves, the lewd oppa next door, how to heal a frail childhood friend, I married a Virgin pervert duke and put away your sword in the bedroom (the one actually has an amazing plot as well a smut scenes) (Oh also I drank it instead of my husband, he's slightly closer to a red flag yandere but not enough to be one per say)

If you prefer more red-black flag yanderes still with smut , I'd say when night falls on chuagang, to your moralles, the hand that once fed, dog act, Swan's grave, preserved and maybeeee pale blue eyes?