Apex plays friendly with AA. I tweak my settings so that I have a nice strong pull, then toy with DPI to find the middle-ground between sticky AA and cut-through into the hitbox.
The same can be done with HIP / ADS sensitivity, but I like the ability to swap between sensitivities on-the-fly via DPI buttons, e.g. jumping into and out of vehicles, playing run-and-gun vs long-range etc.
We can also toy with curves and some other Apex tweaks, but I haven't found it necessary to use advanced settings.