Have you seen indiehackers? It's a whole community of people trying to do just that.
The stock market. If you can do it well enough it can be a full time income source.
tell me more.
You can look into passive investing with index funds. You can look into buying and holding stock and earning premium through selling premium, high delta options, see wheel strategy.
You can trade options like me. I've posted a few more comments with details about my strategy.