Season 5 and carrying

I miss season 3 where it was easy to carry yourself every game. Now a days I make my laner go 0/5, roam top and bot and get more kills but my team always trolls and goes 0/10 and then I can't carry 1v5. I can only remember one game where I was actually carried and I went hecarim jungle but still provided a tank and front line. How do people get to gold with sub 2 KDA? I can get 20-30 kills a game and still lose horribly, it's like people see me mid get 5 kills in 10 minutes and then stop trying and then I have to play my balls off to try and salvage a win. Last game I had to go fizz jungle because people were being trolls (one of them ended up afk). A 55 minute 4v5 game where I carried every team fight killing both the adc and mid laner, getting all the barons and dragons we could. Then our top laner comes back lvl 4 55 minutes in and just talks trash wanting his win. How do you carry this season? It's fking impossible with the dragon + baron minions