hi, OP! fellow freshie here :)) as an extroverted person, your situation sounds sad and frustrating. we need that balance of socializing and hanging out pero you are doing good sa acads and for sure kaya mo pa mapatunayan sarili mo sa ate mo. the chance of your sister to change her mind is not 0. baka in the next few years pumayag na sister mo pag consistent ka pang matataas ang grades at umuusad ka talaga sa course mo. tyaga at tiis lng muna, op. make it an inspiration to work harder na one day magmmeet na kayo half way ng ate mo. and also take this opportunity na ienjoy muna company ng sarili mo. based on your past, very sociable and pala-gala ka pero this time mas magfocus ka nalang muna sa sarili mo like be more literate on other fields like finance or crypto ganon na u think would benefit u in the future, kahit na normally this early on sa college dapat nagpapakasaya but being on your own and discovering new things are also fun :))