If you are thinking about it, dont start playing League of Legends

They have a system where you will probably start in bronze. Once there you will play with terrible toxic people who are either trolling for fun or afk. If you do manage to get good and improve, your matchmaker rating will go up and they will then pair you with even worse players to keep you in bronze. So getting better doesnt improve your chance to rank up, it just insures you will get worse teammates.

Take my advice, dont waste your time.