Need Guidence, Team/Duo

I still have yet to find my sweet spot with a good player, I have been exploring different players and trying different play styles. If you look through my recent history, I like to practice with AI. This allows me to practice my CS and also lets me stretch how comfortable I am with an unfamiliar character. I don't care about my KDA on the AI games, I will try to feed to get the player a few levels higher to get a slight challenge.

Rank: S5 I play TOP/SUP/ADC/JG/MID in that order. Pros: Can play a variety of Champions, well. Open to suggestions and different game styles. Adult, not a child. Played in college, friendly competition, Play well against higher level players.
Cons: Still new to the game. Haven't quite figured out how to do situational builds. First year playing the game, started late. Still learning. Availability: Evening, Pacific time. Looking to improve my skill without using broken champs. Top champs: Gnar, Blitz, Soraka, WW, Mundo, Ashe, Graves. Not in any particular order Could use a good mentor.