I need a champion to play, to get good and to rank with but...

I don't have particular playstyle, neither likes or dislikes i just dont know what to play.

If you just want to adapt and min/max then you should just check the meta picks and try to keep up/adapt with them. http://lolalytics.com/champions/ http://champion.gg/ You can't force finding the champ that fits you; it'll just click when it happens.

From what you said, you like to carry and do damage instead of tank. Thankfully I'm the same way! I main mid/jungle because they have the most influence. But again depends on your playstyle. I rescently changed playstyle slightly. I was an assign main and still love playing zed and Fizz, but I didn't like how they fell off late game with lack of team fight potential. Now I play oriana, syndra, Cassiopeia, and jayce. Probably going to main oriana and jayce. Both champions have good damage, are easy to cs with(super important!!) have good team fight ability, and great damage! As far as jungle goes, I play kha zix. Super mobile and does good damage. If you're just starting jungle I suggest master yi or Warwick. Both have great sustain and are easy to learn!