i'm honestly so sorry to hear that youre going through such a tough time, and it sounds really difficult to navigate so i can understand your hesitance and confusion. i think that honestly if you currently hate your subjects and dont see yourself ever wanting to try to pursue them again then you should definitely consider replacing them with something you enjoy and id agree with your idea of finding another college to start fresh, it may be better for your mental state to change the environment in which you spend your time. And to be completely honest, feeling mad at yourself for having done poorly in exams makes sense, having been in academically competitive environments for most of my school life i get how horrible it can be sometimes to have gotten grades that were lower than you know are you're capable of achieving. The most important thing to remember however is that at the end of the day, you can just take your A levels again, you can take a gap year, you can do an apprenticeship, and there are a wide array of other qualifications and career starting opportunities out there. You just need to remember that your grades can't define your progress as a person and won't define the rest of your life unless you let them. Take control, you've got this.