Surely you are aware that this game has the worst community of any game EVER.
And you're helping to combat this..........how? Complaining about a problem and contributing to the problem is hypocritical and borderline ignorant. My suggestion is to calm down, breathe, submit a support ticket respectfully asking about the details of your ban and really try to think on why someone would find (my best guess) your blind raging comments somewhat offensive.
Coming to the forums where fellow players, most of which are actually quite positive (in the CB at least) and complaining about trolls/afks and the like that we've all dealt with before will garner no sympathy at all. In fact, raging about it when there are several hundred people here that I have seen that have handled their frustration much better than you are specific examples of how your posts and off-topic comments are actually working heavily against your case. Suspension is probably the best thing for you right now, it will give you some time to think on why you were banned, what actions you did to warrant it and why Riot considered you the problem. It's really easy blaming others, it's a tad bit more difficult to take the blame yourself like a mature adult (or impressively mature kid) and then learn from those mistakes to improve yourself as a person. But I believe you can do that, because I believe anyone can do that if they care enough. You want to play League again? Prove to me, Riot and the rest of the community that you can positively contribute and reign in your anger.