Unbelievable that people are saying that some of those UC schools are high matches for you. I would take every waitlist offer, and you’re bound to get at least one. I’d also contact an admissions officer and ask about any potential major flaws or mistakes in your application. It’s absolutely absurd that people think you aren’t good enough for those schools with a 1520 on your SAT and a 4.0. Definitely take every waitlist tho, and good luck with what happens next