I am afraid of Ranked

I want to start playing Ranked but I'm afraid to jump in queue because I can't stand the idea of me possibly playing poorly enough to ruin a game for at least 4 other people. I am legitimately terrified of being "that one scrub" who lost his carry their promotion. That's really the only reason honestly. I can handle people flaming me, someone throwing the game because they didn't get their role. I don't even personally care about losing, I shrug them off all the time. But I can't stand ending a game (even a super close game, the kind of game that you can lose and still be happy with), thinking back on it and knowing that my team could have won if my game was just a little tighter. I can handle losing. I can handle people throwing games, accidentally and on purpose. It happens, whatever, I don't care. I just can't handle it when it's me, and I don't want to hurt someone else's rating because of it.

Posting this made me feel a little better I guess. That's all.