Ranked Placement Problems

So Today I was playing Ranked had my last 4 matches and already won 1 and i was bronze 4 last season and ended up in bronze 5 but all my games this season i did really good and didnt feed except for my sona support game which i do not support and we lost and my win rate with nunu is 100% ive won 4 games with him and 1 with Vi and lost ans Vi Sona Rengar darius but since I was bronze 5 last season in the deep elo hell i got it again this season but all my games i'd rather have 5 kills or above and a low amount of deaths 1 game as darius i went 25/12 and the others were like 12 to 17 kills with like 5 to 11 kills. i just personally think i deserve a higher elo then bronze 5 cause i tried my best and practiced so hard to get out of bronze 4 and 5 and get to at least bronze 1 or 3 if anything is possible for game devs can you please look into my profile and see what i deserve cause i dont feel like staying with a bunch of people that feed its unfair to me cause I try my best every game and but so much effort and my win rate for ranked was 50% and im still in bronze 5 last season i lost all 10 games got bronze 4 this season i loose 5 win 5 and get bronze 5 like please i would like to know why i got replaced back into there. [slayer-jinx-unamused] [zombie-brand-facepalm] If you would like to look up my name on The league client or on op.gg go ahead. Ign: ohArkham