Due to weakness, Golispod is a real up hill battle for Greninja. It can take OHKOs on turn two, when Greninja requires at least three turns to really get rolling. Throw in Garb's ability lock, and I can't think of much you can do against Golispod.
Buzzroc is also going to be tough due to early game pressure. It can spread damage to weaken several pre-ninjas, putting them in KO range for Buzzwole or Lycanroc. Regirock EX and Strong Energy can also put them in OHKO range. Try to trap unpowered pokemon in the active spot and use water shurikens to pick off higher threats. Greninja is tight on space, but Mew EX MIGHT be a decent tech for Buzzwole.