I'm really very sorry but it was stolen while I was at school.

——真的很抱歉。我在上课时，车被人偷走了。

youdao

I'm very sorry. I really am.

我很抱歉。真的。

《柯林斯英汉双解大词典》

I'm sorry to hear that. I really need to talk to him. I have something very important to discuss.

听你那么说我很遗憾。我真的必须找他谈话。我有很重要的事要讨论。

youdao