I happened to be at home.

我凑巧在家。

《新英汉大辞典》

I just, kind of, want to be at home by myself.

我只是想一个人独自待在家。

youdao

If you don't wish to be at home to trick-or-treaters, just go out.

如果你不希望在家里等着那些“不给糖就捣蛋”的小孩，那就出去好了。

youdao

She believed it was important that Americans be able to study such fine art at home.

VOA: special.2009.07.12

I just, kind of, want to be at home by myself."

我只是想一个人独自待在家“

耶鲁公开课 - 金融市场课程节选

and I just want to be at home, not having to do whatever I have to do,

并且我只想呆在家，不用做那些我必须做的事情，

去溜冰场 - SpeakingMax英语口语达人

During that time, she and her husband had taken turns to be at home, using their annual leave.

CNN: In the Grip of a Virus

The collapse happened in the early hours of Wednesday when most tenants were thought to be at home, reports said.

BBC: Block of flats collapses in Alexandria, Egypt

Johnson, who turns 41 next week, is said to be at home resting, no doubt in preparation for a busy summer.

CNN: Dwayne 'The Rock' Johnson on the mend after surgery