League of Legends (LoL) Question: I need a champion who carrying match 1v9 for silver elo

Elo Hell doesn't exist but I don't feel like typing out a big speech about it and I'm not sure if you'd believe me anyway. Instead, I'll just give you some suggestions for each role for champions that are strong and fairly straightforward.

Top: Yorick, Nasus
Jungle: Warwick, Shyvana
Mid: Malzahar, Brand
ADC: Sivir, Ezreal, Vayne (she's a bit more challenging)
Support: Brand, Taric, Blitzcrank

Hope that helps! Remember that League is a team game and you're bound to lose games where your 4 teammates are outmatched by the enemy team. You'll still climb as long as you maintain a positive win rate, which means you only have to win just over half your games. The best way to climb is to focus on improving your own play and make sure you never type in chat in game unless it's to make a call or say something encouraging to your teammates.

What PsiGuard said. Also Leona is in a good place as a support rn. Rammus Jungle is also in a very good place, at least until the Aftershock change coming in 8.2. Even then he'll likely still be good.

If you’re correctly placed in your elo, PsiGuard’s list is a good one. If you’re basically a smurf accound trying to grind up, that list probably isn’t for you. In the second case, I reccomend you learn a multi-roll assassin like Ekko, Diana or Talon who can be played mid, top, or jungle. If you’re and ADC, you want someone with lategame scaling like Vayne or Kog’Maw, or you want Draven. For supports, you need to be an AP carry like Zyra, Karma, or Brand.

Master Yi, if you can hold out until 30 minutes.