how to get better?

Hey, so I’m new to genji and I’m just curious if u guys have any tips for me. I’ve played him for 3 days and I placed gold 5, but I always get genji diffed. Idk what I’m doing, as I’m just going with the flow. I know the simple tips like right click before ability and dive with ur tank and shit, but do u guys have any advanced tips for me? Also, I use the aim training and warm up custom map to practcie, but is there a better one?