How to organize Paths/anchor points better? Messing with the Fill shape I want

Hey all as the title says, how does one manage the Selected paths better?

Im trying to make the pink shape fill but when I select the paths for that shape, its all over the place, like how its connected to the bottom shape,

and even though I cut the path from the main shape it still is considered part of the same RED path as you can see on the right its still one layer RED path and in the main window, the RED paths of both shapes are still connected...

Any idea how to seperate and manage this? Or maybe a pointer on what this kind of problem is called so I can find info on it?

PS) The pink and green arrows and outlines are to showcase the shapes I want to fill seperately