I Became A Level 999 Mastermind Demon King

I’m trapped in a game, but not as the main character, but as a villainess who is the Demon lord (Lv.999). Just because I was born as the Demon lord, my family rejected me for ten years, and I was even kicked out to the snowy Northern region. But what if I could use magic to make a greenhouse? I just want to live my life peacefully, farming and building, but these male lead candidates keep ruining my plans to settle down in peace.