I think you have answered your own question. You are nearly four years out of university and you have not had a paying journalism job yet. You need to get one soon or consider following another career path.
To do that you will probably need to lower your sights and consider entry level roles in print journalism. Depending on the requirements of such roles, you might even need to get further training if your studies have not equipped you with basics such as shorthand, media law knowledge etc.
You will also need to be prepared to re-locate if necessary.
I would also recommend getting some advice on application and interview techniques. Your post here is not grammatically perfect, for example, so you might want to consider what sort of impression that will be making on potential employers. Do your job applications also contain mistakes? It's the quickest way to the rejection pile.
See also: How to: write a covering letter and CV