This is the 13247th most frequent Turkish word.
kazanamaz
"Cannot win" or "cannot earn."
Here, 'kazanamaz' is used to denote inability or impossibility for the subject 'O' (he/she/it) to win the competition.
O bu yarışmayı kazanamaz.
He cannot win this competition.
In this context, 'kazanamaz' implies the conditional possibility related to passing the exam only if the action of studying consistently is not fulfilled.
Her zaman çalışmazsa sınavı kazanamaz.
If she doesn't always study, she can't pass the exam.
Here, 'kazanamazsın' refers to a specific situation pointing out the inability of 'you' to get the job based on the mentioned circumstances.