What are your interests - I mean, CA has different regions (when one says I want to stay in CA is that So Cal, No Cal…other areas? and the schools they are different. What size? Do you want big sports? Budget?
If you think you’re good enough to get into UCLA, for example, then you can likely go to Arizona for dirt cheap. Or a school on WUE that maybe isn’t in the state borders, but will be reasonable.
If Jesuit is ok and your budget is $60K or so, then the Jesuits - like USD, LMU, SCU, etc. - and how about a U of Pacific.
Personally I think saying - it has to be in CA and then leaving it open - is really not a good search mechanism. If you go by food ratings, you can really narrow down on a few.
PS at most big state schools there will be a rager every day…or a lot of nightlife - but it doesn’t mean you have to partake.
What’s your budget? What do you want size? Weather, etc? Big sports, not big sports…