How to make team not throw

Hi people, I am gold 2 (dropped from 1) jungle, with around 1600-1700 mmr at the moment. I had this game where my team would be winning so hard at the start it looked like an easy win. However, my team feeling better than the enemies, they will start to try to go farm cs or take on a fight without a ward or any help and keep on dying. Regardless of simultaneous pings and orders, these people won't give a shit. How do I prevent them from throwing an easy win? I would understand this in silver, but this is high gold and low plat! Come on people...