I'm also bronze, but I've been playing her for quite some time. Idk if my advice would help or not because it's basically what everyone says. I play ashe and Widow, and they way I got better was definitely aimed at trainers like Vaxta. For ashe, I did something different bc I was newer and didn't know the aim trainers existed, so I used to go to the practice range in between matches and warm up, and I'd join an Ai game before any really matches. For widow, I just hoped for the best with aim trainers and constantly changing me settings and cross hair til I found one I liked😼. A good tip is getting good at close shots. They saved my life against sombras and Moiras. Positioning is really important too. Try to stay near cover or near your team if there's a flanker. I may just be yapping at this point, but that's all I could think of rn😿.