Be a leader. Not everyone can be a vocal leader. Players without tenure haven't earned the right to be a vocal leader. Some players don't have it in their makeup to be a vocal leader. But everyone can lead by example. If you do the things Coach May suggests you are a leader. You're setting an example with how you carry yourself.
When my son played high school ball, coming off the field saying, "Let's get some runs" was a big outburst for him. But he outworked everyone. He high fived anyone who did something positive as small as grounding out to move a runner. It's how he was trained by his travel team growing up. Positive attitude is contagious even without being loud.