I was told not to start LOL

Play it but dont get scared if you're bad at the start the game is very complex even if it doesnt look like it .The problem at the beginning is that it has tons of items, mechanincs, characters and names you'll have to remember, added to the point that each character has own mechanics, so in order to win you'll need to understand: the mechanics of your character, the mechanics of your enemy, the mechanics of your own team and the mechanics of the game in general. When you start playing that can be overwhelming, but the game is so fun that you won't bother on losing or winning your firsts games. Practice will make you master it.