6-4 in Placement. Got Bronze V

I did my placement matches this season, went 6-4 and got bronze 5. that seems unfair. Seriously, that's over half my games. i was bronze 1 last season after getting demoted because 2 AFK's and a troll after a legit loss all in a row. but really? would i have had to win all of them to even get silver 5? bronze 1? I'm going to go and list the ranked games i have currently and my score in them and lets see if i was absolutely terrible. Also i play mainly against a range of silver players, low golds, and Bronze 1's, while most of my team is high bronze or low silver, with the occasional gold.

support 0/1/13 22:18 mins Win top 3/2/8 19:11 mins Win support 1/1/14 20:18 mins Win support 0/2/13 26:17 mins Win top 20/3/7 36:37 mins Win jungle 5/4/2 34:27 mins Loss top 6/11/15 41:10 mins Win jungle 1/9/7 48:32 mins Loss

These are all of my placement matches that i can find, and that's 8 of 10. from what i see it seems like i (mostly) did well in each position i was put in, even though I did lose and did only meh in the other 2 matches. Why does the system still believe i deserve bronze five. this is a major demotion from even bronze one. i may make some dumb mistakes sometimes but this just seems a little over the top.

Please post your opinion in the chat and i do hope for all kinds of opinions, and don't be overly aggressive, you can be critical and disagree with be but don't be rude.

Thank you, end of rant