League season on eu starts tomorow i think, but i thought you were around lvl 25. Anyway i do think ranked is a big factor in the game because without ranked i find the game boring and repetitive, no tryhards and no progress so i quited league untill next season.
I hear a lot about dota2, i've never played it but i played Doomsday, dota alpha/beta/1ab/3abc and all the other mods on warcraft 3, this is also where my addiction to mobas started so i guess dota2 is worth a try.
Next up would be Hero Line Wars, this modded map has never been remade but damn best map ever.
My tip right now
Switch to CS:GO