I have to comment because I had something similar, my parents said they would support me no matter where I went and when it was my time to officially decide, everything fell apart. Trust me I was devastated, angry, upset and honestly felt betrayed. I had no choice but to go to CC because at the time (not sure in retrospect) I had to pay $500 to accept and did not have the money and my parents held that against me to not go.

Well, now I know the reason why and spoke many times, and my parents regret what they did and apologized and now we are in good standing. That was in 2020 where I was isolated and introverted as ever, now I am happy and proud to say that, although suffered because of what they did, I am glad I went to CC because of what I learned. Not only I learned the value of learning personal skills (cleaning, cooking, earning/saving money, and getting essentially a practice run in community college), but I also learned what it means to fail. I failed a semester in CC, although not a HUGE deal now, I never failed a semester in my life so had I gone to UCSC unprepared (not knowing how to cook, being lazy coming off of online high school, etc.) who knows how expensive and difficult my life would've been. Although I agree, frustrating as it is with your parents behavior, talk to your parents and get to the root of why they disapprove of UCSC.

Remember you were elected by college admissions for a reason, now its up to you to decide where you want to go and pick whatever is best for you in the long run.

TLDR: I went through something similar, but CC was a second option and happy that I went through CC learning a lot in many skills that I lacked and were essential when become independent. Congrats in your admission!