to criticize, blame, or condemn someone or something
→ を
phraseRare#32,947
to criticize, blame, or condemn someone or somethingを marks the person or thing being criticized. 非難する often sounds stronger than simply pointing out a problem.
JA: 自分の失敗で他人を非難するのはよくない。
EN: It’s not right to blame others for your own mistakes.