Freelancing is remote working, selling your services online, it can be anything, web development, graphics, videos, game development, content writing, social media management, there are a lot of services which you can offer, you become a contractor, you are your own boss. You need good communication skills, good bargaining skills and a platform. That's it.
Tbh i don't know myself. Who is my favourite person, i don't know what I am doing, why i am doing and what is the right way to do it. It all seems to me a game and i am done playing it.