Well this thread is getting out of hand. But I would just like to point out that I play a very aggressive on supports and I never feed hard or just die randomly regardless of whether or not my team talks. Most games end up with us just calling our roles and that's that. The problem that I see you are facing is you lack the knowledge of your champions limits. Now this is something you can easily learn by practicing and being self critical. Yet you are taking the easy way out and just dumping the blame on others since they lack communication.