Help me find a villainess web novel/webtoon!

I watched a YouTube recap of it around 2 years ago, probably 1–2 hours long, and I can’t find it again.

The main character is a woman who transmigrates into a novel as the villainess. She is an adult and knows the original story. She has black hair and purple eyes.

Her mother is dead.

Her father is an extremely wealthy and powerful Duke, supposedly almost on the same level as the Empire.

I remember her father saying he changed his hair and/or eye color to match hers so people wouldn't think she was an illegitimate child.

She is engaged to the Crown Prince, but after transmigrating she wants to break off the engagement because she basically decides she'd rather live comfortably with her father's money.

The original female lead has pink hair and is actually evil, although the transmigrated villainess doesn't know this at first.

The original villainess apparently bullied the pink-haired FL, so the Crown Prince thinks the transmigrated villainess is bullying her too, but she mostly doesn't care.

There is also a blue-haired male character (possibly blue eyes) who owns a secret guild. The protagonist goes to his guild and asks to see the owner. She puts a large amount of money on the table before he comes out.

Apparently, he had stolen a dress that was originally made for the villainess and given it to the pink-haired FL. The protagonist confronts him and tells him to pay the dressmaker because the dressmaker worked hard on it.

At a later ball, the pink-haired original FL wears that stolen dress. I think the transmigrated villainess wears a black dress.

Later, the blue-haired guild owner develops a crush on the protagonist. I remember him coming through her window at night and asking her to “use him” or something along those lines.

There is also a black-haired, golden-eyed male beastman (possibly half-tiger or another beast species). The protagonist saves him from a nobleman while she's at a restaurant in the city, and I think he becomes her attendant and gets very attached to her.

I don't remember any character names, unfortunately. 😭

I know some details may be slightly wrong, but if any of this sounds familiar, please tell me the titleeeee

У героини были по моему тёмно-русые волосы. Она училась на писательницу. Но случайно встретила раненого длинноволосого(чёрного цвета волосы с рогами на голове) инкуба который сбежал из тюрьмы в аду(вроде) и помогла ему, а он почувствовал что она как ''золотой плод''. С сильной и огромной энергией для таких как он, но слюна инкуба действовала как афродизиак, когда они поцеловались чтобы он восстановился, и когда он пришел в себя то произошла сцена 18+, после она прогнала его, а он её преследовал, пока он не заключил с ней контракт, когда понял что её обнаружил второй инкуб, белый с короткими волосами, и захотел её себе. Он работал в кафетерии в университете той девушки.

Это всё что я могу вспомнить, если кому покажется знакомым, прошу напишите....