Aram disadvantages

i have a group of 4 of my friends that is including me, my recent games are all defeats because we get paired with the crappiest champs versed our counters and op players/tanks just about all the time and we seem to struggle just to get one tank at least on our team and roll as much as we can but most of the time it is a worst champ, i would really like if League scaled the matches better on Aram yes i know it is all about luck but not having it all the time? something really questions me about that. and yes sometimes we play bad everyone has their bad games but a full defeat on my recent matches has never happened in the two years maybe three years that i have been playing on this game. if it concerns me this much to start a discussion on this then it is pretty bad, please league just try to scale your Aram gameplay a little better.