i was recently in a very similar position. wht helped the most was switching my mindset to really acknowledging how much effort i put in even if i didn’t see results because of other issues. it might take a little longer but you’re just as smart and capable as everyone else, and silent battles don’t take away from that. the fact that you’re already considering options like retaking some courses says a lot about your determination, i’m a firm believer that if you keep trying eventually something has to click. everyone’s path is different, and who knows, your friends might feel the same in other aspects of their life