your team needs to focus on the objectives, many of your losses have little to no towers/dragons/barons destroyed/slain consider using teleport so you could gank other lanes (especially bot lane) more often or split push. try klepto look up more kennen videos to improve your gameplay https://www.youtube.com/watch?v=QxhXGgPuYiE (there are more videos from this guy and even other players)
place more wards and consider getting oracle lens to sweep enemy wards, i see some of your games with 2 farsight wards on your team while your opponent has two oracle lens. you claim that you have a positive kda but not all of them seem positive, your kill participation seemed low in many of your matches.
three of your recent losses have kayles that feed on your team, she's a decent champion but so many players play so poorly and feed in the worst way possible to prevent this, look them up on op.gg when they have her picked and ban it if they're not good at her, it may seem rude but i used to avoid many losses by banning kayles that aren't capable of playing her in return they usually played champions they were more experienced with.
three of your losses also had jarvan and your jungler probably couldn't shut him down, you can't do anything about the jungle difference unless you shut them down yourself or roam WITH the jungler from time to time, don't let draven grow he's free elo if left alone. each and every game feels so stressful having to call the shots and prevent enemies from feeding off of 2-3 toddlers, most of the time they won't even listen and keep dying from the same mistake despite being told to not die and play safe. i hope this helps, good luck in climbing!
