Worry about yourself
The reason I don't like playing ranked is because I feel like I can't trust my teammates. I wish I could use shadow clone jutsu and play every role myself. No but seriously I spend all of champ select giving advice to my teammates and just begging them to focus on farming and trying not to worry about kills. When the game starts I'm just panicking. I'm waiting to see the first blood, followed by double kill on our Bot lane. Or seeing mid say " report jungler no gank" three minutes into game cus he died. I stress a lot. But I'm learning to calm down and let the game unfold . I mute everyone. In all my time playing league, I've had ONE game where the team works with me and we communicate our way to victory,.. So I just focus on myself. Improve my scores. Help my lanes regardless of what role I play. I find this to be less stressing. I just admit when I lose and have fun improving myself.