Read this.
https://www.edvisors.com/fafsa/eligibility/simplified-needs-test/
If your parent income is really $21,000 a year…is there any chance they were eligible to file a 1040A or 1040EZ tax form…OR did they qualify for a means tested benefit like SNAP or did anyone in the family get free/reduced lunch?
If so…you would qualify for an auto $0 EFC…and your income and assets wouldn’t count…at all…and your parent assets wouldn’t count…at all.
There are questions on the FAFSA to tease this out.