We only have your WAMC profile and not your AMCAS, so we are limited to knowing your real chances. I'll trust the feedback you received, but I think you will get attention from the schools closest to where you live/grew up. Because you conflated your high school and college hours in your activities profile above, it makes me rethink about what activities will count more in evaluating where you are now as opposed to your journey up to college.
"Ongoing" hours to me said you only just started in that activity, not that you had banked 300 hours in high school and sporadically help out when returning from college (?). In your AMCAS application, I would filter out considering your high school hours. What are we left with?
You have many leadership/fundraising activities... many related to a strong involvement in athletics.
So I'm back to service orientation: what activities allow you to find community with those with limited resources and unlike you? It seems the population you have much experience with are those with disabilities mostly.
As it relates to Belmont, is it possible they think you have them as your top choice school? Again, I think you have shown strong involvement back with your community near Arizona. Would you really want to move to Nashville and serve their populations that are in need? Do you have a strong understanding of their needs? The profile doesn't help me there, but if it were me, I am thinking "we're not high on her list" because there is not enough in the initial application to show a true mission fit and connection. So as they say on "Chopped," that's (likely) why we chopped you.