Can anyone please tell me what I'm doing wrong?

I'm playing safe. I'm warding. I'm sticking with my team. I'm farming well. I'm going positive (more kills than deaths). My assists are good if I don't have kills. I'm working toward objectives. I'm building correctly. I'm defending when they rotate.

So what the FUCK am i doing WRONG????????

I'm on a losing streak, and I JUST FUCKING CAN'T GET HOW TO WIN ANYMORE, WHAT DO I DO DIFFERENT?????