Solo players, what is your highest rank and how long did it take you to reach it?

Finally after going through hell i reached glory for the first time as a completely solo player ( i probably only played couple of trio games from ppl who invite me after winning a game ) who mainly play roam end exp, this my first ever moba so when i started playing this game i knew nothing about this genre i only know the name LoL since its so famous,i am so happy to make it this far despite having zero knowledge about the game i learned everything by my self.