A dozen applications is not very much. Anecdotally, I've heard from a few folks that the funnel these days looks something like this: 100 applications -> 10 interviews -> 1 offer. Doesn't mean that you should be shotgunning your resume to every conceivable job (this happens a lot right now and hiring managers are overwhelmed), but it is a numbers game and you need to widen the top of the funnel.