You know that League Of Legends is a game where one team is trying to destroy the other teams Nexus, as the game progresses players are given access to items (some being powerful Deathcaps, others being measly Rings) to help them achieve this goal. Over-all, the only way to obtain such items is gold. There are many ways yo obtain gold in the game.
- Last Hitting Minions
- Destroying Towers
- Killing Champions
These are just a few, yet the best ways of acquiring gold.
You may be thinking to yourself, "I obviously knew all that, I'm not B5". The reason I said that is so I could present my next statement with a much more clear atmosphere. I'm sorry to say that I can't tell you what you're doing wrong just by looking at your over-all stats. You main Ahri and Kat, both of which rely on getting kills and carrying the team. If you don't play them you seem to go support, which, kills are the last thing you worry about. This makes your overall KDA skewed. Your CS per game doesn't tell me much as I can't see how long your avg game is. So I'm stuck in a situation where I would only be able to give you that general response everyone seems to give people when they ask how to get better, "Play to learn the game."
This is not what I want to do, but instead, give you some tips that can hopefully help you. Unless your skill-shots are on point, don't play Ahri, she is not a hyper carry. Hyper carries are champions like Vayne, Kat, Rengar to name a few. I won't go into what makes a champion a hyper carry, but I personally played Kat and Vayne to get from Bronze -> Gold.
Now, the other half of what I'm going to tell you is denying the enemy team gold. Remember the list I wrote above? Yea, that is a list of the most common way's someone can get gold, what you need to do is do your best to stop your lane opponent from getting gold.
Last Hitting Minions
You need to focus on hitting minions yourself to get gold, BUT also try and deny minions from your lane opponent. You can do this by pushing the wave to the tower when your lane opponent goes to roam, ping that they are missing and push the wave, your allies back off and they can't get a successful gank off and by the time they return to lane, they lost about 250 gold from not last hitting. You are now denying them gold and thus, it will take them much longer to get that Infinity Edge.
Destroying Towers
Do your best to push towers and get gold. everyone on your team gets 125 gold when its destroyed and if you happen to be near the tower when it's destroyed, you get another 150. Again, deny gold, in this situation you need to prevent YOUR tower from being destoryed, stay in lane a lot, dont just let them push up to damage your tower, don't roam just because enemy bot lane is low on hp and you MIGHT get a kill. It is not worth it, trust me.
Champion Kills
You obviously want to try and get kills because it gives you gold, but like I've been saying in the past 2 paragraphs above, do your best to prevent your team from killing. Although its nearly impossible for you to save every single person on your team from dying, its 100% possible for you to not get yourself killed. I seen that you avg about 6 deaths on Ahri (rounded from 5.7). For the sake of simplicity, we will say that you had no bounty, that's 1800 gold, that's a lot. Especially when you only get 8 kills per game on her. Now, if you were to avg 13 kills per game, then those 6 deaths wouldnt be so bad, but you don't have that. You either need to work on getting more kills, or getting less deaths. And the reason I told you to focus on getting less deaths, is because it's a lot easier to not die then it is to get kills. This means, don't tower dive when you THINK you can kill the, this means dont over extend when your bushes aren't warded becase you THINK the enemy jungler isn't nearby. Don't assume they are not doing that, ALWAYS expect teemo to be in your lane camouflage waiting to get a lvl 1 cheese off you, ALWAYS expect the enemy jubgler to camp your lane and don't over extend unless you can get out safely or you KNOW you can get a double kill.
Yes, this was a lot but you asked for help and this is what I did to get to Gold 4. You should look into denying the enemy gold, because like I said, that's how you overall get better items, and thus win the game. Understand that you're not going to play at Challenger Level now, you will have bad games and you will have games where your team just isn't doing good, you need to just accept it and move on to the next game. Best of luck on the fields of justice summoner!