Feeling lost and hopeless about getting into postgrad medicine

I’m in my second year of uni and I’ve been feeling completely lost. I’m scared I won’t be able to get into my dream course, postgrad medicine. My first-year results were disappointing, and that’s really shaken my confidence. The GAMSAT feels overwhelming and I just can’t seem to focus on anything. I’ve started to feel hopeless and really dumb. I don’t have any friends at uni, and that’s made it even harder. My family is relying on me to do well, and I feel like I’m letting them down. I don’t know what to do or where to go from here, and it’s been really heavy to carry.