Every lane is going to take practice...you won't just play a lane and be amazing at it....no matter what one you pick you're going to have to work on it so pick TWO roles you enjoy.
I chose Support and Top but can jungle also. My reasonings for supporting as my main is because I enjoy being the play maker engager/disengager of the team and even though they are pretty under appreciated, I do knowing that I can save my team from wipes and keep them safe. It also has helped with map awareness which I completely sucked at!
I chose Top because I LOVE Gnar...I may not be the greatest at him but he's my favorite champion on League and I love playing him, plus I enjoy many other top laners as well.
Pick your roles on reasons like that, not because someone told you to. I think you'll find that you will get better at the game plus enjoy the game more when you choose a role because of that reason