Currently a graphic designer and am in the process of teaching myself coding languages such as HTML and CSS. What is the reality for a graphic designer, web designer/developer going freelance? I'm based in South Wales. Is it very difficult to get consistent work? Can you earn enough annually for it to be worthwhile? Or is it best to get a full time job within development.

Thank you for any help or advice, just want to be aware of the reality of going freelance full time.