What if an Economic Depression happens in the next few years?

Hypothetically, we don't know what will happen in the next few years, but if the worst case scenario occurs, the first Depression since 1929 from the trade tariffs and disrupted business/financial systems due to current Trump Administration policies, what's next?

To be an economic depression: GDP needs to fall by -10%, unemployment needs to be 20%+, deflation occurs due to lack of sales causing oversupply without consumer causing a price spiral, and bank failures freezing credit.

Few on the Left are predicting that level of economic turmoil; at most, they're predicting a recession, but that's not the worst-case scenario. Most folks on the Right think we'll be in good shape with deregulation, and any issues like what we're seeing are transitory, with many buy options in stocks and properties.

I want to put it out there If the worst-case scenario happens, what should conservatives do? Is it an opportunity to restart US from zero? Is it proof that liberals were right about policies?

Lots of big and small questions for this worst-case, thought I'd open it up for folks to consider.