Boost unemployment payouts in the USA, make it 60 or 90 days with ~80% of what you made at your job. Then taper it down after that on a monthly period (and you can improve that in times of crisis). You will need to pump up contributions, but the gov can seed that with bailout money. Long term you gather those payments with a progressive tax per business, not the silo model we use now. Some countries in the EU do something like this, basically, your unemployment is pegged to your salary.

This makes it somewhat "easy", if a restaurant in Seattle sees foot traffic at an 80% decline they fire their team and hunker down for 2 months. Then start back up once we get this thing beaten. And, this invests in labor/consumption and doesn't have the negative side effect of keeping businesses afloat that shouldn't be.

High rent is a killer, that is a harder one to solve. But, you could start a rainy day fund (and seed it with a bailout). Basically offer a 0% loan to any business that needs to pay rent during a time of officially declared national crisis, but the deal is the loanee has to take ~50% off the rent payment for the month in order to get it. And, make that work its way of the pyramid. The idea being the person running the building takes a hit, the bank with the mortgage takes a hit that month...

Note - In the USA unemployment maxes at 790 a week, and it scales depending on some calculations. It doesn't include tips too so most people who work in restaurants are really in trouble.