Oh sweetie…you are a freshman in high school - your whole future awaits. In no way are you doomed! Good for you that you recognized an issue and addressed it. And lucky for you, the issue presented itself in freshman year rather than senior year. Pay attention to where you excel and where you struggle - choose a path that plays to your strengths and not your weaknesses (maybe a job with lots of quick turn arounds and deadlines is not for you, but one that demands lots of creativity and flexibility is). We have a saying in our family of “What looks like a curse, may be a blessing”…ADD or a learning disability certainly can be a blessing. Just don’t use your diagnosis as an excuse or a crutch - use it as a tool to help you understand more about how you learn and function in the world. Don’t be afraid to advocate for yourself and whatever it is you need to become your best self. Focus on the learning rather than “what colleges will think” and you will be fine. It could be that you need a test optional school or one that takes a more holistic approach to admissions. At any rate, a college that is all about gap, scores, tests etc. probably won’t be the best match for you anyway. There are lots of great schools out there who would love a student like you.
My oldest daughter has significant dyslexia and she has always viewed it as an insight rather than an impediment. She has at times sought accommodations but has always insisted on being held to the highest standards. She had a professor who took her to task for her writing and gave her a much lower grade than she was used to - after more than a few tears, she challenged him to teach her how to be a better writer. A year later, he hired her as a writing assistant.
So hang in there…I know a lot of people here will have much more practical advice about how gap’s are calculated, what courses to take, etc. but I just thought I would share a bit of our experience.