There are many schools within driving distance of the beach (15-20 mins) such as SDSU, CSULB, Cal Poly SLO, USD etc…
For many CSU’s, Undecided/Undeclared is an impacted major and at Cal Poly SLO you have to declare a major.
Link for impacted majors: http://www.paly.net/sites/default/files/csu%20impactedprogramsmatrix%2015.pdf
All the suggestions above are good ^^^^^ and being a URM will give you no advantage at any CSU’s or UC’s, but as @aunt bea pointed out, it could help with the private schools.
Are you sure you calculate your UC/CSU GPA correctly? https://rogerhub.com/gpa-calculator-uc/
For the Cal States, calculate your Eligibility index (CSU GPA x800) + (SAT Math+CR).
Also any EC’s or awards? Once you have checked your GPA and calculated your EI, please repost for further suggestions.