"Support" of Greece - that was withdrawn when it was critically needed - resulted in the biggest disaster of our history, 1974 invasion. Greece only brought instability here and it was a much poorer and much more chaotic place to begin with, it couldn't do better even if it wished.
I'm not saying the Greece-Cyprus relationship is totally good in every way, but compare it to Egypt-Sudan. I hope you can see how the differences in geopolitics advantage Cyprus when compared to Sudan.