Having looked into your profile for a bit i see that you mainly play Ivern and vlad, then about 5 others that have about 5 to 10 games each, and another 25 with 1-3 games each.
So lets first mention that Ivern is a terrible champ for soloq climbing, he is super team reliant to actually get anywhere so playing him is just shooting yourself in the foot, you can do super well and still get nothing done.
Then for some generalisation but a average/bad KDA over multiple games most likely means you get carried, because otherwise you´d have better stats, so you do pretty poorly on vlad, nasus and Teemo as well, on nasus especially you dont seem to do much.
So i´d recommend to stop playing Ivern if you want to have a real impact, the champ is both cheesy and team reliant and ends up being little more than a glorified support whom often isnt needed, then i´d suggest investing yourself in 2 roles or a much more limited pool of champions, you are too spread out so you wont ever archive mastery over your picks and will never be able to bring out their full potential to carry your games, except on Ivern who cant carry.....so yeah, replace him.
I have a buddy who hit diamond 3 solo in 45-50 games playing only Yi, vlad and malphite, he got good at those 3 and basically stomped his way up with em.
OP your style of playing so many champs, and maining a bad one for soloplay like Ivern, is what keeps you down, a jack of all trades will NEVER be able to do better than a specialist and at your level those specialists are good enough to minimize difficulties from being countered, especially from someone who doesnt know to play the counters well enough.