What's the most commonly used opposite of "I'm happy for you"?

expressions

Solution 1:

A common expression is: I feel for you.

feel for someone — phrasal verb ​

to experience sympathy for someone: - I know she’s unhappy, and I feel for her.

(Cambridge Dictionary)

Solution 2:

I would say "I'm sorry to hear that".

I always have the feeling that if I say "I'm sorry" I'm accepting some kind of responsibility.

Related

Idiom meaning diverting somebody's attention from a topic which you don't want to talk on
What is a shop called that sells music CDs?
An adjective or a single word that means something is "new" and "different" at the same time
Term for "will consume time and almost certainly yield nothing"
Is it correct to say "You are a path shower" [closed]
One word for "put something to a lower form/level/grade"
Why is the sentence "She sighed, and began whispering again" grammatically incorrect?
Term for doing something little by little?
Prove that the product of a non-zero rational and irrational number is irrational.
What are defining & fundamental representations?
Known bounds for the number of groups of a given order.
Proof of $ f(x) = (e^x-1)/x = 1 \text{ as } x\to 0$ using epsilon-delta definition of a limit