Something similar happened to me my first season of ranked. I actually got placed silver 5, but went on a losing streak down to bronze. I think when you get to a point where your win rate is 40% or less, the system starts to work against you... You start getting matched with worse and worse players until you MMR balances out and you start winning again.
What happened to me was I fell to Bronze 3. I got so stressed on not wanting to drop down to bronze 5 that I stopped playing ranked altogether. But I got placed Bronze 5 the next season anyways, but it ended up being a good thing because I had spammed so many norm games that I learnt how to play better and ended up climbing to gold 5.
My advice? Wait til next season comes and start fresh. It sounds like 2/16 win rate will just make you fall more which I know can be super stressful. However, if you don't want to wait that long, there is a bit you can do to help win some games:
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Attitude. I don't know you, maybe you're a really nice player in game. That's fine, but most people aren't. In low elo everyone tilts super easy and that's when the flaming and raging and afks happen. If everyone's mood stays neutral, you will generally win. This can be done by making sure you only use chat to say positive things to your teammates. GJ, nice work, wp... all the things you should be saying to your teammates. Don't waste the time typing novels in chat, and try to discourage your teammates from doing that as well if you can. I find that can be done with pings (like jungler coming top for a gank NOT spamming pings on a player cuz that's tilting af), and plays.
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Don't die. You probably aren't int'ing, at least I hope you aren't, and this point is really just for bad games. So, if you are having a bad game, play it safe, farm under tower, make sure to ward when you can. If you keep your deaths to a min it will be easier to be carried by a teammate who might be having a better game. However, if you are doing well, DO NOT try to engage on the other team when you are outnumbered or when you have poor vision and don't know where everyone else is. You can't carry a game if you're dead.
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Awareness. As a support main, my job is to do as much as possible to save my teammates from themselves so this point is really from my experience and view from when I climbed through bronze and silver the first time. I have found that a lot of players don't ward or don't look at the mini map. Knowing when a gank may be coming changes the game a lot, especially if a lane is being camped. The little buff timers give away where a jungler plans to be sometime in the next few minutes, pinging that timer or where the jungler might be keeps laners aware of when a gank might come and that keeps them from usually dying which generally keeps them from tilting too hard off the get go. 99% of int afks that I've seen are due to someone doing badly in lane by either camping or just losing to their lane opponent.
So, yeah that's just a bit of my advice from my experiences climbing. You could probably write a whole novel on the science of climbing ranked, but I feel like these are the most important points that touch on the whole climbing experience. Other important things to remember; don't trust your teammates; and, everyone has the potential to carry. In bronze, people can tilt if you just look at them wrong and that is usually why they're in bronze. A lot of bronze players are actually pretty mechanically skilled, but ego/pride/jealousy kind of stuff gets in the way of that.