他为自己当初错过的机会感到惋惜。

Tā wèi zìjǐ dāngchū cuòguò de jīhuì gǎndào wǎnxī.

He feels regret for the opportunities he missed back then.

这么有才华的人突然去世，实在让人惋惜。

Zhème yǒu cáihuá de rén tūrán qùshì, shízài ràng rén wǎnxī.

It’s truly sad that such a talented person passed away so suddenly.

虽然有些惋惜，但我们还是尊重他的选择。

Suīrán yǒuxiē wǎnxī, dàn wǒmen háishi zūnzhòng tā de xuǎnzé.

Although we feel a bit sorry, we still respect his choice.