What’s the best field to enter for remote work?

I have a background in journalism/PR and tons of social media/marketing experience, but unfortunately so does everyone else in terms of remote roles. It seems impossible to stand out on platforms like Upwork when it comes to writing/social media/marketing gigs, so I want to go back to school/learn a new skill set that will allow me to work remotely. What are the best skills to acquire in terms of being able to freelance or work remotely?