Rage

Hi I was gold 1 about a week ago i have been consecutively getting awful team mates to the point where i am now gold 4 i have been playing since season 1 and i am very frustrated because i had an 80% win rate and now i have less than 50% because of people who cant play well its causing me a lot of stress and fatigue and i can't tolerate it anymore dont get me wrong i understand having bad games and not everyone is amazing but dont play rankeds if you dont have the game down.. i keep getting very upset and im very close to quitting the game which breaks me because of how much ive put into this game can anyone help me control my anger please