Try out for
Definition 1 of 1
Pro Tip 1/3Action Oriented
Implies actively attempting to be selected, usually for a competitive position. 
She will try out for the lead singer spot.
Pro Tip 2/3Opportunity Seeking
Shows intent to seize an opportunity or engage in a new experience. 
I'm excited to try out for the chess club.
Pro Tip 3/3Competitive Context
Used in situations where multiple people are contending for limited spots. 
Hundreds will try out for just a few roles in the play.