If it is any comfort, you are not the only one. My DS sent several school coaches his footages last year and the result was radio silence from all. He got rejected by some, wait listed by some and got in some. At the boarding reception coach greeted him. They take everything into account in making a class. It’s just that nothing really seals the admission, and everyone is too busy. Heck, I have been postponing my email reply to my high school teacher some 30 years ago!