Is there any fix for toxicity in Flex?

I'm just trying to get to gold in flex so I get the end of season rewards for both queues. I know, I know, I'm a shitter for struggling to get to gold in flex. I know I'm bad at the game. The amount of unprovoked toxicity in flex is really unfortunate. From 3 man premades coming to my mid lane and running it down mid, to people refusing to play their selected roles, to general flaming. I know it's the nature of the queue, but it always comes back to "it's flex bro, who cares?" Well, I care to an extent. I know no one will ever care about flex rank half as much as SQ, but how can we cut back on toxicity and get people to at least realize that Flex IS a ranked queue, and that norms still exist for people who don't care at all?