Your assumption that if you’re low-income, there’ll be financial aid to help you, is pretty unique to California. It’s true there, for lower income Californians, but rarely elsewhere. So you were not wrong, you just didn’t know what what you could assume as a Californian is the exception and a privilege that most other young Americans do not enjoy, alas. It was a valid assumption and you may feel KO right now from the realization.
Californians can go to CC tuition-free if they qualify for CA College Promise (CCPG) and they may even apply for financial support for books; they can be awarded Pell Grants and subsidized federal loans from the federal government and “bank” them to use when they transfer to a CSU or UC.
https://www.cccapply.org/us/money/california-college-promise-grant
That’s pretty unique - even in NYS where students may get financial aid, there are way more conditions (like, be in the top 10% of your class) and in some states financial aid depends on test scores (1400+ generally) regardless of financial need. And of course this applies to instate applicants - people from other states who want to attend a CA public college must pay full costs, unless they’re part of WUE which allows them to pay 1.5x (and mostly at specific, non restricted campuses).
So, if you want to attend a large college, it has to be instate because other large public colleges will not be affordable (they, too, focus on their own state residents).
The good news is that it means you can go to college
in CA 
Some CCs have dorms but they’re often rural. It might be better for you to live at home or with relatives and commute. But you can explore options.
California CCs tend to be good and have a clear path AA-> CSUs or UCs. But not all are equally good - College of the Siskiyous, which has dorms, is also pretty abysmal at getting it’s students to a UC/CSU.
Now, if you want to attend a more residential CSU while living on campus, there’s Cal State Chico and Cal State Sonoma, which have nice dorms and more students living on campus. Sonoma State also has the Hutchins Program, which has one of the highest graduation rates (you do Hutchins for gen ed+ your major).
https://hutchins.sonoma.edu/
An alternative, which is unlikely to be as inexpensive as free tuition CA CC, is University of New Mexico. It’s out of state and in a city.
After that, if you want to go OOS, it will have to be smaller colleges that MAY have enough financial aid for you.
Both for UNM and smaller private colleges you’ll need the highest possible test score so you should register with College board for Question of the Day+start working with Khan Academy ASAP; get Erica Meltzer’s books (Reading, Grammar, practice - for the Digital SAT); dedicate 1 hour each day to SAT prep.
Now, what colleges? And do keep in mind they may not be affordable but they might. Apply RD (in January or February) so you can present your first semester grades. You could even apply EA if you’ve cleaned up some of your grades. Unlike UC/CSUs, these will take your 9th grade grades into account as well as your 12th grade 1st quarter or 1st semester grades.
Consider
Ursinus, just outside Philadelphia
Marist, 1h30 to NYC
Muhlenberg, 1h30 to Philadelphia
Duquesne U and Chatham U, both in Pittsburgh
Agnes Scott (*) and Ogglethorpe both in Atlanta [hopping city, ASC excellent for queer youth]
Hollins
Goucher
Run the NPC (net price calculator): would any of those be affordable?
(*There, apply EA with 1st quarter grades and complete all the possible SUMMIT essays to maximize scholarship odds)