How Do I Deal with Being Forced to Become King?

Lydia transmigrated to another world and grew up there until she was sixteen. She thought she could settle down and live a peaceful life as a farmer. But then a group of people from the capital suddenly found her, claiming she was the king's long-lost daughter and taking her back to reunite with her family.

Only after arriving at the palace did she realize this was nothing like a family reunion:

The extraordinarily handsome eldest prince, who often had princesses from other countries asking to marry him, was a timid, frail white lotus with some sort of secret of his own.

The strong, bold second prince was a brainless troublemaker, an arrogant brat who had no idea how high the heavens were.

The king, who felt his days were numbered, had no choice but to bring back his daughter and pass the throne to the only child who seemed remotely normal. The trouble was, this country was a complete mess, plagued by internal strife and outside threats, and miserably poor...

Lydia, later forced to become queen: I think a political marriage sounds great. What do you think, big brother?

After Lydia became queen:

"Your Majesty, the royal granaries are running low again!"

"Your Majesty, the dragon in the east is causing trouble again!"

"Your Majesty, your brother has been whisked away by a princess from another country again!"

"Your Majesty, why have you... why have you taken off your crown?"

Lydia stripped off her royal robes, tossed the crown from her head, and crouched beside the throne without a shred of dignity. With the weary air of someone who had seen it all, she wanted to light a cigarette. "Find someone else. I abdicate."

A queen who only wants to serve her country and people VS a two-faced white lotus male lead with three personalities

Theme: Even the weak can achieve great things