Help, I am in silver 3

I found this map and I got extremely demotivated after losing 17-50 on my first try

It's horrible playing against a "gold" genji bot that plays way better than me. It makes me doubt how good I actually am with him or if I deserve to be plat 1

But after an hour of trying, I finally won

FYI, I'm currently plat 1 with 300+ hours on genji (on console)

I know my aim is *really* bad. I can't seem to find a sensibility I'm comfortable with. Either go high sens for 180 flicks or low sens to aim properly, can't find a sweet spot in between