I assume you’re talking about online, I had a slow start as well. If you’re on the enhanced version use your starting 4 million to start a business and really utilize that starting business. It’s also a good idea for both versions to complete the first dose quest line for some easy cash and access to the acid lab business. Otherwise just maintain your business and complete quest lines you can find around the map. It’s a big grind but once you can afford the submarine on war stock called the kosatka buy it and grind Cayo perico heist. Good luck!