损人利己 (sǔn rén lì jǐ): Harm others for one's own benefit / selfish (verb/idiom) — Meaning & Stroke Order

His behavior of harming others for his own benefit will ultimately cause him to lose everyone's trust.

Genuine cooperation should aim for mutual benefit, not adopt any short-sighted strategies that harm others for one's own gain.

He has never done anything that harms others for his own benefit, always adhering to the principles of fairness and integrity.

Although it may bring short-term gains, actions that benefit oneself at the expense of others will ultimately destroy trust and lead to backlash.