how do people in other parts of the world find work or secure new projects?

I am a graphic designer based in China. I’ve recently become curious about how people in other countries go about finding work. For instance, here in Shanghai, we have industry-specific WeChat groups—some with as many as 500 members—where people frequently post requests like this: "Seeking a team for video editing and graphic design. The work focuses on managing KOS (Key Opinion Sales) accounts on Xiaohongshu (Little Red Book), involving the repurposing of existing assets. The content mix is ​​60% video and 40% static graphics/text. The commitment is for 20 deliverables per month, running until next March. Start date: ASAP. No in-office presence required. If you have relevant experience, please reach out via private message to introduce yourself or provide a recommendation—kindly include your portfolio and a price quote." I’m in at least a dozen such groups on WeChat, and new job opportunities pop up in them around the clock. This has left me very curious: how do people in other parts of the world find work or secure new projects?