How can I ask the volleyball coach to give me another chance at trying out for the team?
You should talk to the coach and tell him what you can do to make yourself better. Inform him about your choices and passion and try to commit to becoming a better player.
Show a mature and really interest in volleyball and supporting the team. Say what can I do to get better and go on about your dream of becoming pro or whatever
U have to accept that ur not on the team.