A G/A isn't an emergency and shouldn't become one.
Power and pitch increase.
Flap reduction
PRGU.
That's the majority of the G/A in basic steps.
If the automation doesn't provide the correct response BE A PILOT. If you know the fix for the automation do it. If it's not obvious, OR if you're near the ground, or the autopilot or automation has produced an undesirable attitude or trend BE A PILOT. Fly the airplane. Since the automation isn't working as expected that leaves basic HAND FLYING.
Move up or down the automation level as necessary. If you're at a higher automation level and it's not going well, and if the fix isn't obvious or can't be accomplished immediately, get to a different automation level OR establish manual control.
This is automation/FMC/modern jet aircraft 101, isn't it?