What is fashion journalism or journalism in general?

I really wanted to get into a field where I could enjoy my job and recently I discovered fashion journalism but I couldn't really find the sources or information based on fashion journalism that satisfied my questions as to whether I should take this as a career because journalism seems like a freelancing job to me and writing is my strong base which is making me question whether I should make a career out of it or not. So I would appreciate if I could get a brief of what fashion journalism really is and if i could take this as a safe career choice.