So, I'm bad at this game

but what surprises me is that my enemies aren't? like, ever? what? I went Ziggs support on my last game because why not and the enemy Cait had almost 300 cs? they never overextended and bot lane was the calmest lane I've ever seen, I poked until my mana was depleted and Sona healed it all lol but the adcs were SO much better than me O.o why? mind you this was solo queue, I expect shitty adcs on each side and idiotic teammates but then .. this .. wat