Who can I ask for my letters of recommendation?

I’m planning on applying to transfer to USC, and one of the requirements is 2 letters of recommendation. The checklist says “ask your college course instructor, academic advisor, employer, or internship supervisor to submit a letter of recommendation on your behalf.” It is my first semester of my second year at community college and I have not formed well enough relationships with my professors or anyone to ask for a letter of recommendation. Most of spring semester and fall semester is online, and my first semester of college I was too shy to talk to my professors. I’ve talked to my counselor, but only about transfer planning and classes, can I still ask them? My department supervisor at my job seems to like me and thinks I’m a good worker, would their letter of recommendation be valid?