My first time to get suspended

Sooo , the other day , I played a ranked match and I got suspended for 14 days, granted I told my brother to pick a champ for me because had stuff to do and he did what every good sibling would do , pick lee sin support. Now , I am not saying that troll picking is justified in any way shape or form, but I tried my best to be viable to my team , but , failed miserably . But that was not what I was banned for in that game , no , it was because of "abuse".Now , I did use some strong words (as you can see in the logs below) but that was with intention to "mock"(or at least my attempt at mocking) the yi who was really frickin toxic.Here are the logs (btw I use "lol" a lot , I apologize in advance)

Game 1 MaShinE: lol MaShinE: by brother picked for me MaShinE: my* MaShinE: ? MaShinE: sort off MaShinE: yes MaShinE: yes MaShinE: I picked soraka mid for him MaShinE: last game MaShinE: Yes MaShinE: damnn MaShinE: gj MaShinE: coming MaShinE: sry MaShinE: fuckk MaShinE: lo MaShinE: l MaShinE: sry MaShinE: ik MaShinE: couldnt do shit MaShinE: get reafy MaShinE: ready MaShinE: yup MaShinE: im pretty sure you will win MaShinE: but hey MaShinE: thats JUST A THEORY MaShinE: A GAME THEORY MaShinE: THANKS FOR WATHING MaShinE: lol MaShinE: lol MaShinE: my team hates me MaShinE: they want me to get terminal cancer MaShinE: I think MaShinE: NO MaShinE: free penta MaShinE: yes MaShinE: bastard isnt even that offensive MaShinE: use stronger words MaShinE: like *%%%got MaShinE: and *%%%%%% MaShinE: tresh MaShinE: wanna dance? MaShinE: lol MaShinE: sure MaShinE: ol MaShinE: jesus christ MaShinE: report this yi MaShinE: toxic as hell MaShinE: he wishes cancer upon us MaShinE: nah dude MaShinE: unless you all go afk MaShinE: YESSSSSSSS MaShinE: kill secured MaShinE: I would MaShinE: if I could MaShinE: GG indeed