Possibly an issue with MMR and/or matchmaking?

Before writing this, I did some reading around and found that I'm not the only one with this problem. I'm just wondering, what's up with League's matchmaking?

Two or three weeks ago, I hit level thirty on my main account and was pretty excited to start playing with full runes and masteries and all that good stuff. But once I got to thirty, I immediately started bombing almost every game I played. Looking at my match history, of my most recent eighteen games (this goes right up to my first game as thirty), twelve were losses and two of my victories were against bots (because sometimes you just need an easy win, y'know?) and I went negative fourteen times.

Yeah, this sounds like I just suck, I understand, so at first I just thought it was a rut. But it's been going on for weeks and I'm beginning to think that there's an issue here. Most of these games I've been put against mid to high division silvers (which isn't much, but I've never even played ranked before so that's too much for me) and I really think that there's something up with my MMR. Even my buddy has been doing pretty bad lately and he's a really good player, so I'm confused on this. My temporary solution for this has been to ask everyone in the game to report me for being unskilled so I can get that adjustment I need. The thing is, I don't know if it's working because I have no idea how many people (if any at all) are actually doing it for me. Could there possibly be an issue? Was everyone's MMR reset for the new season? What can I do to try to enjoy playing this game when I just get my ass kicked back-to-back?

I will literally take anything here.