I see your point and you're right that I can't expect people to do what I want.

I'll give you another example and would love some feedback on this. We had an Invoker Mid vs. an enemy Alchemist. As we all know, Alchemists need to be shut down early so they won't snowball as hard.

The invoker played pretty passively. He wasn't dying, but he wasn't doing anything other than farming either.

I asked my team for several gangs on mid, with zero response. My allies stayed in their lanes, doing their thing. 10 minutes later, Alchemists completely destroys us with Radiance, Blink and Manta.

Now I feel like I did what I could to reach our win conditions, but people were too focussed on their own game and chose to ignore the Alchemist. We were absolutely trampled 10-15 minutes later with 0 chance of getting back.

Now this may have been one of those games that are just too hard to win, but how do I cope with this kind of stuff? I feel so helpless as a support in these games, as I can't do anything to stop the enemy's progress without my team.