Chance me at UCSC, UCI, UCSD, UCLA, UCB

Here are some UC admit rates based on the capped weighted UC GPA but major specific:
2022 Admit rates based on the Capped weighted UC GPA.

Campus 4.00+ 3.70-3.99 3.30-3.69 3.00-3.29
Berkeley 17% 3% 1% 0%
Davis 58% 20% 5% 2%
Irvine 35% 10% 3% 0%
Los Angeles 13% 2% 1% 0%
Merced 97% 97% 95% 85%
Riverside 95% 83% 42% 17%
San Diego 37% 8% 1% 0%
Santa Barbara 41% 8% 3% 0%
Santa Cruz 69% 45% 16% 4%

Not sure what you mean about Good Hooks into social Justice. Involvement in social justice via EC’s, awards etc… are not Hooks but would make for interesting PIQ topics.

UC’s are very unpredictable so I would start your college list by identifying 2 Very Likely/Safety schools. None of the UC’s you have listed would fall into that category unless UC Merced would be an acceptable option.

Spend time on your Personal Insight essays highlighting your passion for social justice and make sure to elaborate on your EC’s, awards and activities. Best of luck and apply widely.