3 sentences

1. 不要谈及个人私事。

   bù​yào tán​jí gè​rén sī​shì.

   Don’t talk about personal matters.

   Source: CCMatrix

2. 我不喜欢打探别人私事的人。

   wǒ bù xǐ​huan dǎ​tàn bié​ren sī​shì de rén.

   I don't like people who pry into other people's private affairs.

   Source: OpenSubtitles

3. 不要在公共场合过度分享或大声谈论自己的私事。

   bù​yào zài gōng​gòng chǎng​hé guò​dù fēn​xiǎng huò dà​shēng tán​lùn zì​jǐ de sī​shì.

   Don’t overshare or talk about your private life loudly in public.

   Source: UM-Corpus: News