Here's some thoughts from someone who has done Bronze V to Gold 1. I placed into Silver 3 this season from Gold 3.
In the pre-season you completely tanked your MMR. You do not drop down from Gold to Silver, or Silver to Bronze until your MMR is at Division V of the tier below you (i.e. a gold player would need to have Silver V MMR to get removed from Gold). While you may have thought you were at Bronze 1, you were actually already at Bronze 5 due to tanking your MMR in pre-season. "Silver V" really means, "between Silver V and Bronze IV", so to leave it, you had to have Bronze V levels of play over the course of many games. It is totally fair that you were placed in Bronze V. Your games were all with people in Bronze V/IV and you won only slightly over half of them. You actually were climbing a bit during your placements, but ended up dropping.
The first thing you need to do is to drop the attitude of powerlessness and blame. The opponents you are playing are not Bronze 4, 3, 2, 1, or Silver V. They are all also Bronze V. One of the things you do not say or admit is that the other teams in the games you have played have also had huge feeders on them. So stop with the excuses, your 4/4 game as Elise had two people with 1/9 on the other side and you were basically carried by Kalista and Darius. There's actually a few games like that. There's also a few (not a majority) where you won and were the carry.
So you need more games where you win and are the carry. My advice is first to pick a role. It seems like you are alternating between JG and other things. Pick two roles every time and stick with those two roles no matter what.
My second piece of advice is to play less champions. You have way too many champions that you are playing and no clear main. You should have a very clear main that is your first choice, then a second choice for that role. Same with your other role. You only need 4-5 champions total and around 60% of your games should be on your main champion. Trying tons of champs is not going to be good. Elise may be a good idea, but the important thing is to just pick a champion.
As a question-- why did you stop playing ADC? It was your strongest role last season and this season you have only played once ADC game. Graves is also in a great spot and he looks like he was your main.
You could also consider some of the easier strats to climb out of bronze, i.e. play a hard carry tower pusher, play a crazy good split pusher, or play any champion with a hook (blitz is best but the others work) and ward/catch people out of position.
I think that you'll climb once you take a bit more of a realistic look at the situation and start dealing with it.
