honestly i can kinda relate....the thing that helped me however was making an error log for math and R&W...not that im rlly good at SAT, but it boosted my score quiet a lot. also, u probs already know this but since SAT is a standardised test, sometimes changing ur approach can make a rlly big difference...anddd u might wanna figure out whether ur the kind of person who performs better under pressure or not. based on that, u can work on ur mindset too...that could help. but honestly, dont beat urself up over it. trust u got this...maybe ur just an underdog haha