Low income/High one-time capital gain, now unemployed

Ahh, more pertinent information always helps. You are a good candidate for “professional judgment” by the FA office at your school, based on the abnormally high 2018 income and your parents’ current unemployment situation. Contact your school’s FA office now, and explain your FAFSA numbers and what has happened since your 2020-2021 FAFSA was submitted.