Change of Major Please Help

I’m an International student with a
GPA: unweighted 4
SAT: 1300 (math:740 Reading:560)
SAT2 Math: 720
I recently got reject or defer from other universities, I didn’t actualy notice how competitive of the major cs
So I was wondering if anyone know which engineering major is a easier one to get in that I can change before the end of January
The awkward part is that I wrote half of my essay that I like cs, so would it matter if I change the major to something else.

UCSB admits directly into an Engineering major so all are selective. A student not selected for their first choice major will be reviewed for admission to an alternate major outside of the College of Engineering if one was selected.