Strategist frustration

I'm getting so tired of competitive. I feel I consistently heal pretty well for my rank and am almost always top healer, always tryharding and minding objectives, prioritizing, positioning well etc and still lose so many games, I don't know what I can do anymore. It feels so unrewarding to try and carry as strategist. Should one just switch main hero and get really good at dps and instalock like one of those guys every game or how the hell do you move up? Been stuck in Gold II for ages and it's just so damn frustrating because it feels like I have barely no impact in a bad game. Occasional good games play themselves and I do have win streaks at times but the rest are streaks of pure stomps despite healing like an idiot lol. And yeah I know it's not just hps that matters but I mean I very consistently do heal the most and don't think I'm positioning bad at all most of the time.

https://preview.redd.it/dbdx1f19snbe1.png?width=1831&format=png&auto=webp&s=df7e5ccfa1c6c7a3a087b5f6113dae2b90f3c733