As merlinxx says, don't mention that your intention is to go out flying! Even if you think that a pilot would be most suitable for a job as a flightplanner, most employers think the opposite, since they know that you won't be satisfied to work in the ground ops forever. On the other hand, a job as a flight planner etc is a great way to gain experience and it also great fun (at least I think so
).
Continue to apply to all companies that are operating commercially, they should all have some sort of ground operations. I got my first job without any more experience than my fATPL, and after a year I even got a typerating so anything can happen! Good luck!