Newbie Question: How do you actually find remote work?

Hi everyone, I'm new here and dreaming of becoming a digital nomad! My biggest hurdle right now is figuring out how to find remote work that actually pays the bills.

I have experience in marketing/writing/dev, but most jobs seem location-specific.

Where do you look for legitimate remote job postings? Are specific job boards better than others (FlexJobs, WeWorkRemotely, etc.)? Is freelancing on platforms like Upwork a viable start?

Any tips for someone just starting the search would be greatly appreciated!