There are small micro things you can teach and people can apply in game easily, like how to abuse CDs, use defensive shields during specific clutch timings, lvl2 power spike all ins, or how to target in team fights, maybe even how to last hit under tower.
Don't expect people to learn the more difficult things like zoning, wave control and macro rotation methods / reasoning in a heated game. You can try to float the concept around to see if they can learn it, but don't expect them to do so.
It's ok for people to be wrong, we aren't perfect. The next step is to plan and prepare against that set back you had, and you can improve by learning from the past mistakes or playing better in the future and how do you make the best of the current situation.
Btw, it is possible that you can be at fault even though you thought your teammates were at fault.
Let's say that Zilean is shoving your wave, and you disagree with that action. But dragon is up, your jgler is around and at decent health, you have a pretty decent wave and the enemy stuck at wave clearing. Shoving and getting dragon could have been the right call. If you didn't see that macro, it might be your fault instead, and yet you blame others for it.
Eitherway, there isn't one way to play the game. The game is fluid and is changing every second, people need to make decisions on the fly whether it's a macro or micro decision.
Someone who can be good in laning phase may suck at macro and vice versa. Some people panic when getting ganked and blow everything incorrectly while some can stay calm and defensively 1v3 under tower. Some might be great at landing skill shots but don't know how to zone. Some are great at leading, some are great followers. People in silver2 are bad in general, but they can be good at a few things. Your goal is to find what people are good at and play around that.
If you want comebacks, look for the person with the best macro in the mid game and play around that. Observe how they rotate and how they react to people's positioning (teammates or enemies) on the mini map. People whom mindlessly push don't have the best macro, but if you see someone split pushing but then backing off (or even just hiding in a safe spot) when they don't know where all the enemies are at, then you know that person has good map awareness and good macro.
You don't always need to follow that good macro guy around. Providing if you can give him information on where the enemies are (or where the enemies are not), then he can make the macro decision on what to do. You can push a lane and have pressure elsewhere to keep him safe, you can blue trinket to give him vision (even better, blue trinket in an open field, so the enemy would hit the trinket while rotating and wasting time, giving your split pusher more time to back off).
And yes, my strength is in my mid game macro, and I suck at the micro stuff like landing skill shots and team fights. Mid game macro is a fun game if you know what to look for. Don't go giving up just because laning phase didn't go well.
