I usually hate the generic reincarnation/revenge webtoons cause they are usually pretty boring. This one was actually really well done, and I loved the MC. Instead of fully being focused on revenge she's more motivated to ruin their lives by thriving in hers. Disclaimer that the translations are pretty horrendous and questionable, and the chapters are out of order. Make sure you scroll to latest official release of chapter 1 and read from there.
Marry My Husband