All aspirations that I've had, and worked towards have come to nothing, so I'm thinking of trying to get more into the ground side of things.
Does anybody know how you become a ground instructor at ATPL level?
You appear to be saying that you have tried all other possibilities and failed, so now you are prepared to consider being a Ground Instructor.
With that attitude no CGI would give your CV a second glance.
Did you really think that no potential employers would ever read this forum?
I have recently recruited an additional GI at EPTA to cope with increasing student numbers. In doing so I rejected five other very good candidates who actually wanted to do the job.