What is your UC weighted capped GPA?
Calculate with https://rogerhub.com/gpa-calculator-uc/ .
It needs to be at least 3.0 for California residents (3.4 for non residents) to be eligible for UC admission.
However, if your recalculated GPA is in the 3.00-3.39 range, you should consider UCM a high match at best, and the others reaches. CS will be a more competitive major as well. Past admission rates by GPA: http://talk.collegeconfidential.com/university-california-general/2174563-2019-uc-freshman-admit-rates-updated.html