Fairly new as well, in Gold and trying to climb too. In my opinion, it literally doesn't matter what you play or how good you are in Gold rank. The only thing that matters is your random team.
You can know how to play your character perfectly, do your job, and if your team is bad they will get farmed, not capture points, and lose the game no matter what you do.
Conversely, you can be clumsy and learning, but if you're on a good team then they will win despite your plays.
That's why I feel games at this rank are based on streaks. If you queue up and you win, immediately queue again and hopefully you get the same people.
If you lose, get off the game and do literally anything else for a few hours.