Losing streaks and rising toxicity

So I've been on a losing streak for like two weeks now (partly because of Illaoi's release and her arguably un-intuitive counterplay, and the stupid rise in popularity of Brand, whom no one in bronze/silver knows how to counter----and I know the answer is Galio, thank you), and I will admit two things upfront:

1. Yes, I have been getting increasingly frustrated. and
2. No, I have not been raging in chat (being a smart ass? Sure. But cursing people out and insulting their mechanical abilities? No.) bonus
3. As far as I know, I have not been penalized for any reports I may have received (though I haven't received any warning notifications that I've been reported)

I'm sure I've been reported for being bad (though you can't actually report people for being unskilled anymore), and I've been raged at in game at higher frequencies lately (whether or not it's been my fault----but I main support, so often I'm raged at for dying/not warding because I was dead/warding but then my teammates not looking at the map and then accusing me of not warding/my adc slacking/taking cleanup kills even when no one else was around and/or my adc died/being too slow to a teamfight that my team starts in the unwarded enemy jungle against the enemy frontlines without waiting for me/not listening to my warning pings that they're about to get ganked and then rage at me when they die....really, the list goes on).

But I have noticed, as I've been writing it down with pen and paper (because this is how much I procrastinate my final essays), that the longer my losing streak goes on, the more toxic my teammates become. Now, I have my own self rule that if I lose three games in a row, then I stop for a day or two or a week (which is why my losing streak is carrying over for such an extended period of time), so it gets really frustrating and hard to keep my cool when I log on to League after a day or so and go "Today's the day I'll finally get my first win! :D" only to get cursed and raged at from game one, when just a week or so ago, the rage levels were significantly lower.

Also on a side note, if the MMR system is supposed to balance you out to a 50% win rate, then you would assume approximately every other game you would be placed on the "winning" team, right? By that I mean, eventually you'll be "handed" a win where you'll be placed on a team that has about a 50% win rate at the moment, and the enemy team will be people like me who are one losing streaks and psychologically losing morale. Except I looked over my team vs the enemy teams, and I noticed that my teammates in all the games I've lost were also on losing streaks, while the enemy team was either collectively at a 50% win rate or winning streak. This patterns continues for at least five games in a row.

And basically I'm at the point where I just don't even want to play the game anymore because it seems like every game I play, I will be paired with toxic teammates and I will lose, and it's just about as much fun as having butt sex with sandpaper. (By which I mean it's not fun and is painful to endure). And I know there is a mute button, but that won't stop angry teammates from trolling you in game just because they're mad at your entire existence.

side note #2: I tried playing a bot game just to get my first win, but it poses no challenge that makes the game fun. I know, my life is so hard, like what even.