Teammates give up absurdly easily

For at least 50% of my games in the last few days, there has been at least one person on my team who has asked for ff at 20 or open mid when we were only 2 kills down (often without a tower even having gone down).

This is absolute stupidity. Because we were a duo, my brother and I were able to prevent the surrender vote, and won most of those games anyways (we scaled better than the enemy team too).

I have never had such consistently frustrating teammates in this game. It seriously feels like it happens every game now.

Isn't there something that can be done about this? I still enjoy the game overall, but it's become much more about keeping your teammates happy than actually playing against your opponents. My teammates seem much more my opponents than the other team.