another wrong MMR boosting banned

Hi guys, I know maybe people are tired about the MMR boosting banned posts...But I just need help. I promised that I NEVER did MMR boosting and you are always welcome to check my match history. OP.GG:http://na.op.gg/summoner/userName=supremeshiney

I got a 14-days banned due to MMR boosting. But I NEVER did that. I know the definition of MMR boosting and I am 100% sure about I NEVER did that. I played it since S5, and I was G4 in S6, P5 in S7, and now I am P3. I don’t think there is something wrong with my climb, cause I play every single game by myself. Recently I just played normals with my friends, because it is the end of the season and I know there will a lot of boosters so I don’t want to play rank games. Also, I have a lot of assignments, so I just want to play for fun. My flex rank is g4, because when the rank flex just began in s7, I just played the 5 people premade flex games with my friends and so I was just silver in flex last season. This season I climb to g5 cause some of my friends are silver in flex and some of my friends are platinum so I think gold should be a good position to play with them. You can always check the champions I played in the rank games, I am a support main, sometimes played bot or mid, rarely played top and jungle(doesn't mean I don't know how to play, I practiced the top and jungle in a period and then I back to other positions). I also played CN service and in the summer (from May to August) I was in China so I didn’t play NA service that period. I am D5 in CN service because I played everyday and my friends are also performing well. I practiced some champions during the summer and I tried some of them when I backed to US. But mostly I played support. I am honor level 4, almost level 5. I am a really positive player, and I NEVER afk, or int. I hate giving up the game even in the aram, so I never did that negative behaviors. I mean, Riot did not punish the people who are int...but punished the player who is always being friendly... I’m so disappointed to the game now. I met the int, afk almost every 2 games in normal. I never blamed them, and I tried hard to carry every single game. Back to the MMR boosting, I clearly know the definition of it. And I promise, nobody knows my account, I never share my account with other people, not even with my boyfriend. Please, give me the evidence, check it and find out it’s a wrong ban. There is something wrong with the system, I don’t want to receive the punishment and warning because of the behaviors I never did. Also, I'm glad to answer the question about which game is "like" a boosting. [sg-soraka]