What do GM's have and we don't

A more practiced triggering of synapses that let them remember opening, middle-game and end-game line, strategy and theory (all reinforced by years of experience).

being really really really really really really really really really really really really really really good

They have 3 Norms to be A GM ( But we haven't)

let's think about the other hand:
What do we have that GMs don't?

an extensive backlog of losses!

@RTD1109 a GM has a better rating than you :D

I have no iDEA?

Yes, and they do (good one!).

@RTD1109 ooooooh roasted

We and GM are only simple persons but chess is about regular practice and developing skills