How to shape your training?

Question

Adobe Photoshop

Hello!
I need advice from an experienced web designer and interior designer.
Briefly about me: I am not a designer or a programmer by profession, during my basic studies I took courses in web design and website development. This gave its results and on which sites, in the main online stores, I earned. But now I understand that my knowledge is very small for making money and for a long time I can’t decide what to do?
I am interested in two areas: web design (including website development) and interior design. What, in your experience, is more in demand and what needs to be learned (leaving out the extra that can be learned during practice)?