You may have already tried this and not found success but in case you haven't: Nearly all of my biggest career advancements have been the result of a job change

You may have already tried this and not found success but in case you haven't: Nearly all of my biggest career advancements have been the result of a job change not a promotion internally. I don't know your personal situation, however, I do think more people are capable of finding themselves a better position with more opportunity than they think they are. If you think you are stuck and that's stopping you from looking for better opportunities elsewhere maybe you are have more opportunities than you think you do.