when a crisis occurs whether it is due to Pandemic or War then automatically a country will do "LOCKDOWN" which means locking all activities related to crowd interaction such as casinos and sports matches..

now "PANDEMIC COVID-19" is making huge losses, even The big teams have to cut their players' salaries to cover the costs the Team has to bear. The future nobody knows and the possibility of a crisis like this will happen in the future is very large.

For entrepreneurs who want to start a gambling business or gambling players who want to continue playing gambling, this is a list that can be an example of gambling that is not interrupted in times of crisis;

- CASINO ONLINE / LIVE
Many offline casinos are closed as now so playing online casino is the best choice..  You can get a reference for example or type of game HERE

- E-SPORT
every year E-Sport enthusiasts continue to rise even to the match at the Olympics, many predictions say that the E-SPORT market in the future is very large, the profit generated can be billions of dollars.  E-Sport does not need a big place and spectators, even players can do matches at home..  You can get a reference for example or type of game HERE

- LOTTERY
This is one of the old types of gambling, although there are currently several lottery providers that have temporarily closed their services, but in fact the Lottery market is very large and can still survive if creative and innovative service providers for example by adopting crypto currencies.

The OP is very open to suggestions, if there is another type of game that you know is very good so that in the future we gamblers can still play even in the 'LOCKDOWN' state..