Echoing that you need to produce good essays even as a recruit.
The college essay guy .com site has a lot of free resources for the common app essay and a bunch of brainstorming exercises, and also addresses how to write the Haverford specific supplementals. That site has many sample common app essays, and JHU, Hamilton and Tufts also have ‘essays that worked’ on their websites.
Watch the two videos Haverford created about their supplementals: https://www.haverford.edu/admission/supplement
I don’t know to what degree this is true…but if you have good HS grades, good enough to pass the pre-read at Haverford, I suspect your writing is fine (even though you might struggle to do it.) At Haverford, you are going to be doing a lot of writing. I am not challenging the fit of Haverford for you, but just something to think about.