How much can I earn on DeFi?

I'm curious to know, how much can one realistically earn through DeFi, or decentralized finance? Are there specific protocols or platforms that tend to offer higher returns than others? And what are the potential risks associated with earning through DeFi? Is it feasible for someone new to the space to start earning through DeFi, or does it require a significant investment and a deep understanding of the technology? I'm eager to learn more about the potential opportunities and challenges of earning through DeFi.