Good advice so far in this thread, and it sounds like you have a decent baseline (job + car) to start with in the USA.

I would start with using various websites to search around for roommates - in the Midwest we use craigslist and facebook groups/marketplace a lot for this, but it will probably be different in California. What you're probably looking for is someone who had a previous roommate move out, and are looking to sublet. They're out there, and they'll be happy to have you. Having a source of income is more important than credit right now, IMO.

Living with strangers as roommates is pretty normal. Sometimes roommates are kinda shitty, but there are various degrees of it - I don't think it's something to be terrified about. You might even find yourself bonding with these other people who you're living with.

Moving out of you're parent's house is an opportunity to change the dynamic with them for the better. Call them, tell them about your week, visit them every so often... but as your own adult person.

You're building up the pyramid of financial independence right now. Make a basic spreadsheet with your income, and all of your monthly expense - writing it down makes it real, and shows you how much you can afford.