回答

・I don't care anymore!
・I don't care whatever!

「我不再在乎了！」在英語中可以表達為I don't care anymore! 或 I don't care whatever!

Even if I do my best in sales, I only get low evaluations from customers, so I don't care about my work anymore!
（無論我在銷售工作中多麼努力，我總是收到客戶的低評價，所以我不再在乎我的工作了！）

No matter how much I study, my grades won't improve, so I don't care whatever !
（無論我學習多麼努力，我的成績都不會提高，所以我不再在乎了！）

有幫助｜0