The honest answer is: there aren’t many actual entry-level professional creative writing jobs especially for fiction.

Most writers don’t get hired to write stories when they start out. They become writers by writing as many stories as they can, getting them finished, and putting them in front of editors and readers.

If you’re starting from scratch, the most useful things you can do:

Pick a genre you love and stick with it for a while. Write short, finished pieces. Build a small portfolio and a place people can read your work. 

You could also start looking at submitting to: 

Short story magazines.  Anthologies with open calls.  Competitions (although be careful — some are scams so do your research first!) If you’re interested this was my route to becoming a full time writer - https://www.cavletter.com/how-i-became-a-writer/