Diamond 2 ADC/Jungle. AMA about league of legends!

Becoming a better ADC 101: This is an ADC i highly recommend to any player learning ADC. Jinx is a late game hypercarry. She has a pretty strong laning phase. If she falls behind, she can easily come back into the game. She deals insane AoE dmg. Mastering jinx will teach you how to kite properly with an ADC more reliant on autoattacks to deal dmg and jinx doesn't have a built-in escape so you will get punished if you have bad positioning and don't utilize your Q properly.

Learning corki will teach you to land skillshots. This adc has a very strong early-mid game with high burst magic dmg from his skill kit. If you don't land your spells as corki, you will notice a huge difference in your damage which can cause you to lose a teamfight or potentially the game.

This champion has so many unique qualities about her as an ADC that she absolutely needs to be picked up and learned to improve the player's skills. Her passive is a whole other mechanic for adcs to learn and exposes players to kiting (except in a leap form). She also can't cancel autoattacks and her autoattacks deal less dmg (90% of total AD) which teaches the player to time and spend their autoattacks wisely. Her W's active ability exposes the player to the importance of getting vision on fog of war. The W passive and ult teaches the player the importance of support synergy and rewards you for working well with your support (without your support present, you WILL notice a difference in kallista's overall dps). The E teaches you 2 things: 1. Multitasking getting resets on the E off of minions while getting harass on the enemy champions 2. The importance of extended trades and patience (kallista will deal less dmg in a shorter trade and if you proc E too soon, you will deal less dmg and you might end up dying in certain situations).

The most importance aspect about ashe is her ult. It teaches players to utilize hard CC abilities to initiate fights. A well timed ult will lead to better teamfights for your team or maybe create opportunities to pick off enemy champions and get a free objective off of it.

Tristana's most crucial aspect is her E. It deals insane dmg to turrets and it teaches you the importance of getting objectives. By playing tristana, you should notice that your games will have higher objective control and maybe higher winrates (if you played her properly).

Aside from these adcs, if you're just wondering what adcs are good to learn for hard carrying, i'd recommend these:

If you're looking for the best champions to carry in every role, I'd recommend these: Top - Mid - Jungle - Support - ADC -

Now aside listing these champions, you really don't have to learn every role. There are ALOT of one trick ponies in high elo. Just pick a champion you like and become really good at the champion, understanding how to play all the matchups and abuse the strengths of that champion, and you can climb easily in ranked (this is the fastest way). I'd say learning multiple roles and champions takes alot of time. I know how to play every champion but i've been playing this game since season 1 so you can guess how much time I've spent playing this game.

Meta represents champion picks that are very popular (flavor of the month picks) at the moment and they're interpretations of what the players in the region think are strong. It can differ from region and tier. It can easily change after any patch or once players start picking certain champions more often. I think meta is used as a guide for any player regardless of elo. BUT, you don't have to follow the meta. There are players who will always pick certain champions regardless if they're "meta" or not. I think the meta helps you understand what the popular picks are but if you're not good at those champions, then there isn't a point to pick them. Always pick the champions you can perform well on. You can pick any champion you want to play as long as you're good at that champion and can outplay the enemy.

I'm having a hard time jungling with Fiddle. I rarely get kills unless i lane gank and the enemy pushes the wave so i'm right behind him.

As a jungler, you have to be creative about how you gank because simply waiting for the enemy to overextend before you come to gank the lane isn't always going to happen. Buy a pink ward and scanner lens so you clear out enemy wards. If they have the river area heavily warded, try ganking through lane . To do this, wait for the minions to push out and then walk into the bushes when you're outside of the enemy's vision then sit in that bush until the enemy pushes up and is in the range of your abilities. You can also flank the enemy from behind and force them into a "clamp" at their own turret (once you have hourglass, you can tower dive easily. Otherwise, be very careful about how much turret aggro you take). Don't always look to gank through the same path because that makes your ganks more predictable and the enemy will ward that area more often. Change it up.

I am also having trouble with my ult in teamfights. I always try to wait for the fight to be engaged then I start channeling it from a place where the >ennemy team can't see me, but when i finally get into the fight, most of the people on my team are either low or dead.

Fiddle's ult is purely AoE magic damage so it does alot more dmg with more enemies. You should use your ult ideally when you're able to catch alot of enemies in it. Don't always wait for your teammates to engage. You can intitiate first with your ult. Just make sure your allies are nearby to follow-up before you do. Also, you want to be able to anticipate when your allies engage because you usually want to ult right before that happens.

I know Fiddlesticks is not good with RG but he's my favorite jungler and i just take zhonya's straight after my jg item instead of getitng runeglaive.

That is completely fine. You really don't need to complete it because its somewhat of a waste. Fiddle scales better off of rushing that hourglass and building more useful items. His jungle clear is already really good so he only needs stalkers/Skirmishers.

Also, if you could recommend me some champions to learn the jungle in general (since i think it's my worst role), it would be great! :)

If you're just trying to learn some easy junglers, I'd recommend

(Sorry about my bad english, i'm french canadian)

Your english is fine. I got your main points. Hope my tips helped.