Lots of reasonable personal advice here. I want to suggest some community driven ideas, though they’re less fleshed out than I’d like.

Look into community and common gardens (and if they don’t exist, start pushing for a local org to make such space). If you are renting, look into tenants unions (or consider organizing your own).

Invest some in food kitchens + homeless shelters now, while you’ve got something to share. Consider volunteering and becoming more familiar with the resources (you may not need it, but others could).

Consider broader political organizing. The people in power (even in local positions!) when the crisis hits will definitely matter. America gave big buy-outs to businesses during previous crashes; but it could payout to citizens just as easily. Lookup and start discussing policy solutions that could help insulate you and your community. Bring this up at a city council meeting. Write a county representative.