Let me tell you something, I have like 1100 wins in normal games and the game is almost exactly the same as you describe.
If you want to play a game where everyone is friendly and do what pleases the team, you lost your way coming here.
BUT, you can really have fun when you start. You seem to know a bit more about this kind of game than a true beginner so if you find 2, 3 or 4 friends to start playing with you, this will start getting really funny.
This game is REALLY worth playing when you play with mate. If you play alone, good luck. LoL is full of trolls, leavers, afks, flamers, kids, and it does not get better.
Be patient and find other players at your level. You might even be able to find them in the rare games you will play and enjoy.
Hope I helped.