Situation, 反倒 + Unexpected Result
反倒 is a colloquial synonym of 反而, meaning "on the contrary" or "instead." It expresses that something turned out the opposite of what was expected, often with a tone of surprise or irony. It is more common in spoken Chinese than 反而.
我好心提醒他,他反倒生气了。
Wǒ hǎoxīn tíxǐng tā, tā fǎndào shēngqì le.
I kindly reminded him, but he got angry instead.
越是着急,反倒越容易出错。
Yuè shì zhāojí, fǎndào yuè róngyì chūcuò.
The more anxious you are, the more likely you are to make mistakes.
大家都紧张,她反倒特别淡定。
Dàjiā dōu jǐnzhāng, tā fǎndào tèbié dàndìng.
Everyone was nervous, but she was remarkably calm instead.