[California] What are my options if my restaurant job has reduced my hours to 5 hours a week?

Initially, I was hired on with the expectation that I would soon be a server and would go through a brief training period of bussing. I got 15 hours the first week and then it immediately dropped to 6 hours the following week. It has been 2 months now and about 2 weeks ago I asked for more hours and their response was to drop me to 5 hours a week. What are my unemployment options? If I forgot anything I’m supposed to include feel free to let me know.