As for warding, I have to disagree with some of the people here. If you are at bronze don't ward for the utility, just ward for yourself. Most people have such bad awareness than they would get ganked even if all enemy champions were permanently revealed.
I would spam retreat pings but if i know someone is going to get ganked.
And once you are safe (either because you have map coverage or you can win 2 vs 1 fights) push hard and go ganking /counterjungling or just farm your jungle. You can easy get double or triple farm this way, and deny enemy team if you are counterjunling / ganking.