Please chance me for Californian Universities as an average student [TX resident, 3.16 UW, 1220 SAT, low income]

What about some Cal State Schools? The price is closer to your tuition cap and it is easier to get into a good CSU school than the UCs you list. They may be target/reaches. What major or field of study are you interested in? Many CSU schools are very good in areas of business including accounting, and have good engineering programs at some schools as well. Maybe look into Cal State Fullerton, Cal Poly Pomona, CSUN, or San Jose State to name a few.

https://www.calstate.edu/apply/paying-for-college/csu-costs/tuition-and-fees/Pages/future-tuition-and-fees.aspx