I'm going to break this into separate categories on what I can see from your op.gg.
Runes-
First, I don't know if it's by coincidence, but your "Standard AD" page literally has no AD on it, and your "Replay.GG" page is a standard ad page.. with that being said, if you're interested in playing ADC, you want to have AD reds rather than attack speed reds. This is because you need that little bit of extra AD in early trading opportunities, which the 15% attack speed that you get from your reds can't necessarily make up for, it also means that if you're farming under turret at early levels, you'll be able to let the melee creeps take 2 tower hits, then it will only take one auto to kill them, rather than if you have no AD on the page, where one auto at base AD and
won't kill them. With that being said, I would highly recommend specializing in two roles, 2 to AT MOST 3 champions in each role, and crafting your rune pages around the champions that you play. (You don't have an AP page currently, but if you're not playing AP champions, that's obviously not an issue.)
Masteries-
Most of your masteries look okay to me, if you're looking to optimize your masteries, I recommend going to look at guides, as well as probuilds.net where you can see what high level players are taking on the champions, their game/champion knowledge means they are more likely than not going to be taking the most optimal settings when it comes to runes/masteries/builds.
Champion Pool-
As I stated before in the "Runes" section, I recommend playing 2 roles exclusively, considering that's viable thanks to dynamic queue, and 2-3 champions max in each role. If I'm going into a game in Top lane, I'd be a hell of a lot more scared of someone with 700k mastery points on Yorick, rather than someone that's played Ekko 3 times. Once you figure out champions that you can literally just spam, you'll eventually learn the boundaries of that champion, as well as the mechanics will just become second nature, and you will be more able to focus on macroplay (your play in relation to the game as a whole) rather than microplay (small mechanical play that happens constantly throughout the game), and that's how you establish leads, push leads, and win games.
Example from me personally: I've always loved
and would consider him to be my main, I was in my Gold promos when I just kinda said "fuck it" and started playing random champions in ranked because I'm silver and I'm dumb like that, and within a week and a half I was Silver V 0LP wondering what I was doing with my life. I realized that in playing a bunch of different champions that I'm not experienced on, I would ultimately have around a 2.5 kda per game, which isn't atrocious, but you can't carry games with a kda like that. Lately I've been SPAMMING THE EVER LIVING SHIT out of
with most games getting over a 5.0 kda, stomping games, and climbing fast. If I don't get jungle, I just play
mid because she's easy, strong, and can hard carry games.
Gameplay-
I obviously haven't watched you play, but from your op.gg there is one big thing that kinda stands out and that's deaths. In your match history, there is only one game that you had less than 5 deaths on (8/1/4 20 min Yasuo game, assuming this game was a stomp) With that being said, especially as a jungler, you want to die as few times as physically possible. The two main things that helped me when I was having troubles in games, which ultimately lead to me getting more kills, dying less, was 1. the
- I'm not going to talk your ears off about the logistics, but granting you and your team vision, as well as denying the other team vision, is WAY more valuable than 75 gold, so pick one up every time you back. 2. THE MINI MAP - again, not going to talk your ears off considering you've probably heard this before, but the minimap is literally in the bottom corner and only takes a split second to look at, and can give you literally all the information you need in the game. Someone forget to call mia? Well, if their icon hasn't been on the mini map for ~3-5 seconds, they're probably mia and you should play accordingly. Their jungler is ganking top and your bot side? Go counter jungle in their bot side jungle and try to trade back what you may lose from the gank, and if the gank is unsuccessful, you just increased your lead/decreased their lead. Either looking at it every 2-3 creeps in lane, or whilst doing/walking in between jungle camps can make a world of a difference when it comes to map awareness and gameplay accordingly.
Closing tip-
I'm going to leave this wall of text with a quote from my Econ professor, in that you should have the goal of learning, not just performing well (on the test), because if you learn it, the success (on the test) will follow. I know he is saying this in the context of a class, but if you think about it, it really applies to a bunch of different settings, including League. Learn the game, and the elo will follow.