Autofilling in ranked

Out of the 22 games ive played this season I have only gotten midlane a total of 5 times. My main role was only given to me 5 times. I understand that you guys at Riot have to autofill or give secondary role to alot of people but how in the world is it fair to give me my main fucking role less than the amount of times I get a role I didnt even queue for (this is even crazier since its happening in Plat-Diamond elo after season 10 placements, people here spend literal years perfecting a role myself included). Not only that but I get ace (on op.gg) every goddamn game, dominate my autofilled lane which I dont even play (again in High Plat-Diamond elo), roam and help all the other lanes, give them kills, stay positive and try to support my team morally as much as mechanically and still get a feeding player in my main role instead of getting it myself? I get the most damage almost every single game, the highest roam score, most honors and almost every other stat IN MY OFF ROLE. And yet, the teamates that I get matched with on MY team specifically taking my role go 0/7, 3/8 and etc, spend the entire game only flamming the team and spamming FF votes when im trying to be positive and still carry the game. Its maddening seeing my main role given to another player more than 75% of the time and them feeding and flaming every SINGLE GAME. The 5 times ive gotten midlane this season I absolutely stomped but all the wins I get from there are just thrown off by loses when I get damn support and cant get any impact on the damn game because our midlane viktor went 0/7 into Syndra and Hecarim and they one shot the rest of the team now. Am I still climbing? Sure, but the rate of bullshit that I gotta slog through is insane. Im not gonna say im Challenger or even Diamond 1 level, I make alot of mistakes obviously and its hard for me to solo carry games. But doing consistently good in lanes I dont play and being rewarded with dog shit to the face is absolutely frustrating. Is there ANYTHING and I mean I WILL DO ANYTHING to get midlane more? Do I have to put something else as my secondary role? Do I have to start winning/losing more in my autofilled games? (losing is def not a problem believe me, I count only 6 games where the midlaner that got the position instead of me went positive in lane). Its super upsetting seeing my LP go down from factors I cant even effect because the cross map dies 2 times by the first 7 minutes, before I can even roam to help them since roaming at a time so early would put me so incredibly behind as much as them.