Unfair Match Making

This is just getting pathetic i do well in every single one of my games im the only one in all my games played this season that has a positive score riot this is sooooo unfair come on you need to sort your stuff out my score is averagely 8/1 and my team comes out as 0/5 1/7 0/8 how can you explain that i have played this game for over 4 years now and its been a waste of my life im over it i thought it was meant to be improving instead its down grading ARMATURES