I'm sorry for that to you 这句话写得对吗?

I'm sorry for that to you 这句话写得对吗?
I'm sorry for that to you 这句话写得对吗?

I'm sorry for that to you 这句话写得对吗?
我为此事向你表示歉意（或者遗憾）
这样写没错的.
如果你想强调“那件事”的话可以这样写.

你这样说外国人也能听懂
意思是 我为那件事向你道歉
i`m sorry to you about that或者
i apologize to you about that

语序:I am sorry to you for that.
意思:因为那件事情向你道歉

I am sorry for that 就可以了 to you 就没必要了，你在写（说）的时候肯定已经有了被接受的对象

I am really sorry about what had happened.
我为此事向你表示歉意
try to be specific and be gentle when apologizing.