Any one care to explain?

Any one wanna dare to explain and I do mean explain not act like a child or troller or well a jack ass, how is it possible to even have a decent match in this game any more?

Here I am playing ranked on 3 diferent accounts 1 bronze 3, 1 gold 5 and this one which is silver 4 in every account I seem to be maintaining the rank they got and from looking at the matches of each account the rank that's being maintained isn't even thanks to my skill. . . . each match I either get a good team and get carried to the win or a terrible team and lose is that it for ranked I remember it being diferent? game decides where you belong and then put the teams so one is heavely favored to win, hell the way each match goes is even the same in all 3 accounts, I don't get many kills or deaths, almost always 0/0/0 until 10 15 mins and then team fights start happening and depending on if the team was good or trash I either get more kills/assists or more deaths there is never a I outplayed the enemy of my lane we just sort of farmed and poked each other not really getting kills.

How is ranked supposed to work this isn't fun, getting a win and going yea I did nothing to contribute to this win or getting a loss and going yea I did nothing there that could have prevented that loss