Hard luck/lines
Definition 1 of 3
Pro Tip 1/3Empathy Expected
Use it where you might expect understanding or support from others due to bad circumstances. 
After losing the contest, she said, 'That's hard luck,' hoping for a hug.
Pro Tip 2/3Negative Outcome
It expresses a negative outcome that couldn't be predicted or controlled. 
He trained hard but still lost the race. Well, that’s just hard luck.
Pro Tip 3/3Not Overly Formal
The phrase is not very formal; more suitable for casual conversation. 
She missed the bus due to a flat tire? That's hard luck.