LOL, is it fun? do you recommend it?

Honestly, you should give it a try, but I would recommend to go above level 15~20 atleast, to get a feel for what games are usually like. The game does change a bit as you level up, atleast till 25~30. Do expect high levels of toxicity trough out the game, as I feel it as gotten worse over the last 2-3 seasons, tho you can just mute people if you're like me.