Ok, I just briefly looked over your OP.GG and I immediately saw very big reasons why you cannot get out of Bronze. Firstly, there is no way to say this nicely but here it is.....you are a feeder. You have way too many games where you die more than 10 times. I'm looking through your match list and I'm seeing 10, 11, even 16 fuckin deaths. Like Holy fuck, this needs to stop. If you ever want to climb out of Bronze you need to stop feeding. There is no reason in all of existence you should be dying 10 or more times in any match you fully intend to win.
https://matchhistory.lan.leagueoflegends.com/es/#match-history/LA1/2093870404807072
I got to Gold on that account, look through that list and you will see that I rarely die 10 or more times in those matches.
OP.GG for the above account:-
https://lan.op.gg/summoner/userName=xelniya
Secondly, your CS per minutes is atrocious. In nearly all of the games where you played in lane, you are getting 3 CS per minute which is noob level, and I mean like "just started playing a week ago" noob level numbers. The very first time I climbed out of Bronze, I did it by focusing on farming better and just carrying games. Aim for at least 7 CS per minute. You can even get away with 5 or 6 CS per minute but not 3 per minute. You won't win all your games this way but you will win a lot more just by decent CSing along.
The combination of your intense feeding and your extremely low CS per minute will 100% for sure keep you in Bronze. Fix these problems and you will have a very real shot at getting out of Bronze.
One last thing, you play way too many champs. Get a main or two. Don't be trying to climb playing all those champs. We aren't Faker. Mere mortals like us can only become proficient on a couple of champs at any given stretch of time.