Normal MMR question for Reds or those knowledgeable.

So...I'm not good...I know that...but I'm trying. Yesterday I played a normal game where I was top lane as Jayce paired against a Darius. I did ok in the laning phase...I think I was 4-2 or 4-1 by the end of it...the others lost their lanes though and we wound up eventually losing a marathon game. No big deal, was fun. But I looked up the guy I was against in the game and he was a level 30 Bronze 2 player...I was notably 20 at the time...maybe 21.

I don't have a problem with that...just a question. Does that mean that I'm currently on pace to be placed in high bronze in 9 more levels? Or am I on a pace for better than that as it's placing me up against them when i'm 9-10 levels lower than them? Just seemed kind of weird...and I'm curious how that all works. I'm notably trying not to be discouraged by the whole "bronze" thing though hehe.

I know I have a long way to go to be anywhere close to decent...but I am trying to improve and I'm not the kind of person that just blames teammates etc. We may have lost mid and bot lanes...but we were still in a good position 30 minutes in and we controlled dragon the whole time...there's undoubtedly things I could do better to help carry...just have to learn them. Thanks to those who might take the time to answer my MMR question.