This is the third season in a row that Ive gotten to one win away from gold

For the past three seasons i always get within an SR range of being one win away from hitting gold and thatswhen I lose about 5 games in a row, it's really disheartening to get throwers like that. Imnot blaming my team entirely as I know I could play better but I typically flex into rolls as a Reinhardt, Lucio, Mercy, and Winston because everyone else just wants to play DPS, does anyone have any tips to finally get me out of silver? lol