I feel your pain i went on tilt dropped from Silver 2 to Silver 5 in 1 day.. i won 1 out of i think 11 games... I woke up the next morning asking myself what the fuck happened and how. After some thinking and some video watching of youtube talk about ranking up, I came to the conclusion that I wasnt bad but i wasnt good, and that there are things i can improve on if i want to carry my team to get out of my hole. At the end of the day, Although i didnt have the best players on the team.. Having a negative mind set that i was going to lose before the game even started dragged the entire team down indirectly. Even if i was 4-4-15, its not good enough. You need to do your best, you need to impress yourself. You may not be able to penta kill every game, nor win every game. But fixing the small things makes HUUUUUUUUUUUGE difference. Little things like out CSing your lane opponent go a long way friend. Good luck and have a great day :)