I'm not exactly what some people would call a "folk singer" but I do make a reasonable living singing and have done so for the last ten years. Some of the songs I do would perhaps be termed "folk songs". I've not got much of a voice but I do know the words and I do get booked back.

To get back to the start of this thread.........
There is plenty of work out there if you make the effort to get it, though there will come a time, I'm sure, when everyone will get to the stage where you have to ask(beg) for gigs.

Getting work is down to a lot of different things.
.....(off the top of my head)........
your material, your act, self promotion, will you travel, your fee, etc etc.....

It's not easy - but who said it would be.