There are a couple reasons for this:
#1: KDA isn't everything in PvP
Sure, you might already understand this, but using your KDA from a bot game vs KDA from a PvP game isn't a very good gauge of how well (or bad) you're doing. I have had games where I have been 0/5/0, and still carried the game through objective control and wards (I might be exaggerating a bit, but seriously
+
is some serious seige)
#2:** Players do things that bots can't**
League is a game of micro-decisions, as well as instinct and split-second judgements. The jungler just destroyed that ward, where is he going? The enemies are missing, where are they? Should we forfeit dragon to take mid tower, or contest it?
Bots are made with very specific instructions as to where to go, what to do, and when to do it. They can not make objective calls, they can not itemize, and they can not take advantage of vision control. Players are very different in this way. They can do all of these things, and they do. Much in the same way, in a PvP game against someone like
, the enemy team might save their CC for when he dives in, whereas bots will just blow it on whoever is available. That is why you are able to completely steamroll these bots, but fail in PvP games.
#3: In bot games, you farm champions. In PvP, you farm minions
I remember when I first started leauge one of the champions I picked up was
and I LOVED her because I could get items super quick, and it was so easy to snowball into a one shotting legend. When I got to PvP, I couldn't do anything it seemed like. I eventually took her to botlane and support became my main role (and still is for the most part) for a really long time. What was missing?
In the bot games, I could easily stun, burst, and ult champions into oblivion. In PvP, people will dodge your stuns, walk out of your spells, and just generally not be as predictable as bots. Because of this, you need to learn how to CS. It seems like, looking at your previous games, you tend to get your CS late (especially on yi, which is easy because q will one shot waves), but when CS matters most is in laning. You need to be able to hold a competitive gold edge against your enemy in order to survive lane and not allow them to snowball.
Some good tips for CSing are:
-
When under a tower, melee minions are two tower shots and one auto, and casters are one auto, tower shot, and then auto.
-
Save spells such as Ahri's Q for when you can't hit all of the low minions quick enough with auto attacks, or you will run out of mana quick.
-
When playing mages, it is useful to take the savagery mastery in the cunning tree.
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Consider picking up some basic AD/AP rune pages to make CSing easier. Run AD/AS runes on everyone, even mages, for a bit until you can get the hang of how to CS
-
I know a champion that helped me learn how to CS was
because her q is effectively a really strong auto attack that resets on kill.
is a much harder champion but also shares this mechanic. (Kind of. Not really anymore, but the .5CD of E still helps to CS)
*If you are really dedicated to learning how to CS, go into a custom as your favorite champion to lane with and just last hit minion waves mid for 10-20 minutes. Try to look at your minimap often, keep wards up without losing farm, and to not push either way. It'll be hard, but once you can do it you'll skyrocket your gaming skill.
So I wrote a lot more than I intended but if you ever want to play a game you can always friend me and I can help you. I've taught three of my friends how to play the game so I'm used to new player mistakes and the sort.
Edit: you're EUW whoops oh well hope I still helped somewhat.