You can carry with any champion you want to that has decent carry potential
say from someone as low as Zed, to someone as high as Draven
the whole thing is just about your mentality and your playstyle
you should never go into a game thinking that u just dont want to lose; rather going in thinking u want to win
you should never flame or add to flame and usually try to be the peacemaker, talk people out of anger and just ask the team to group
in solo queue its hard for communication so a good carry role would be mid or jungle as even tho jungle dont get the kills, u boost morale and instead of carrying your team by kills, u make sure they feel good and in turn the whole team starts to win
i personally try to do that (even tho i still lose tons of games)
never let tilt get to you...
if a lane is losing, dont send more people to that lane, eventually the person dying is worth no more gold than a cannon minion
instead, send people to the winning lane and push that out, trade a tower for a tower and if possible, outplay them with something idk
theres alot of things u can do to carry but as long as u make sure u win early game, and have a good mentality u should be able to carry
(if u are behind i can give u more tips to win but im too lazy to type that so in game msg me if u want more tips)
btw this is my smurf acc and my normal acc is plat 5 so yes dont doubt me i know what im talking abt