Yes, I still believe that GKs role is cosmetic and most of the times just represents the Luck part of a game or give an alibi for your loss.
But still we 're trying to do the right thing.
Some games are fixed but some games which start bad, we can reverse the flow of the game.
Here a game I had yesterday in CL.
Opponent was much weaker and not present.
Yeah, the right recipe for a troll game
I could see the signs that the game is going for a troll even if I scored at 61' the 1-2.
My GK had a low rate and that continued in reds, decreasing bellow 6.
I could see a conceded goal coming so I subbed my GK.
That didn't help me as the goal of oppo came at 88'.
So the game was fixed not to win.
Look at the comment now - John Weir (my GK who came from the bench at 81') lacked motivation - lol
This fixed game was to blame my main GK Dida for the not-win.
But as I subbed him, so that crazy comment went to my sub-keeper.
If you see games like this, that means you did the right thing but beaten from the AI of the game, not because you did something wrong or opponent manager was better.
So you keep the same things for the second leg, hopping that bad Luck won't strike you twice (usually doesn't).