the ranking system is broken...i am done with this game!

i spend alot of time playing this game...and when a single game takes around 45 mins i would say i put effort into it. but things got to the point where i feel this game is just not balanced. i keep getting teammates that i can tell they are not on my lvl. this is a 5 mans team and to win teamwork is a must. and when i see my effort go in vain because of the missmatch.. i cant help but feel sad, angry..u name it. but u know what!? idk why am i doing this to myself!? u wont fix ur ranking system, its like u dont even care. u are improving everywhere but not fixing ur broken ranking sysem and i wont give my self cancer cause i have noob teammates like 60_70% of the time and i should be nice to them. i am not here to test my patient. i am here to have fun and to see results out of my time and efforts. for this i decided to quit leauge.. u have a good game that u made so frustrating.