If someone is unlucky, they have bad luck. Owen was unlucky not to score on two occasions Others were unlucky victims of falling debris. = unfortunate lucky
You can use unlucky to describe unpleasant things which happen to someone, especially when you feel that the person does not deserve them. Argentina's unlucky defeat by Ireland. lucky
marked by or promising bad fortune; "their business venture was doomed from the start"; "an ill-fated business venture"; "an ill-starred romance"; "the unlucky prisoner was again put in irons"- W H Prescott
Unlucky is used to describe something that is thought to cause bad luck. Some people think it is unlucky to look at a new moon through glass. lucky