Gambling is a high risk way of making money, this is not for everyone, only few people are successful with investing in gambling, investing in the sense that they are gambling for a living.
Not making money, the right word for it is that you have a chance to win money. You are making it sounds it is some kind like a job. Not entirely true though, just correcting this statement
Gambling is not a job or a business or an investment, but many people have this sense in their mind which is totally wrong. Also i think Casino are locked down for a long period of time and even if lockdown is lifted across the countries, the crowded places or places where public gathering is expected, they will remain closed for a long time period. So only option for everyone is to play online gambling.