If I say carry the game I'd probaby be hit with a brick...
But really, there isn't much you can do if you know you're pulling your own weight. Never be a heavy weight that your team needs to carry, be light enough to be carried by your team or even better, try pulling some of your team mates' weight. It won't guarantee you a 100% Win rate or anything, but it'll certainly help.
The problem I had the most in Silver was some people being too heavy. 4 People would try so hard to win the game but this support Bard (random example, sorry Bard mains) would just be way too heavy to carry, forcing us into a 4v5 while they had a, idk, a Braum support that could actually do something. Rarely does counters or team comps matter in Silver. It's usually whether if everyone is pulling their own weight (or is afk and feeding, which I personally found more common)