does anyone know

Im looking for an isekai (i think?) manga about a woman with black hair being sent to another kingdom to marry a king instead of her sister (who has blond hair). And the blond haired sister was very like FUCK nobility and it kinda backfired on her cause she ended up wasting money on giving out food and stuff. Everyone loved the blond sister and didn't like the dark haired sister. anyway I hope someone can help meee, thank you ahead of timee ヾ(❀╹◡╹)ﾉ~