Having bad luck; having much trouble; not successful in life.
Испытывать неудачи; быть в трудном положении, беде.
Harry asked me to lend him ten dollars, because he was down on his luck.
The teacher is easy on Jane because Jane has been down on her luck lately.
Alan is down on his luck and I am sorry for him.
Алан в тяжелом положении, и я сочувствую ему.