Teammates in competitive

I have taken a long time to get to gold I grind everyday I’m always the best on the team and usually get potg and today I got into gold 5 and my teammates are the worst in 8 games I won only 1 and all those game took around 20 minutes to get into each of those games one of them my tank threw the game and most games there’s at least one guy not doing their job mostly supports please fix this