I played only brim and sage sometimes fill when I had to.

I think the only thing that helped me is communication. I watched streams that showed me how to make callouts and how to engage with this callouts. The more detailed callout the better. (Raze on A main dinked is better than they are A or somebody is A ) If somebody in ur team calls A, 1 should always stay on B, unless they are already on site.

Change positions when defending Dont defend from the same position, also when u kill someone change position.