you sound like someone who has 'played' a bit and has reached a level where you now need help to bring it together.
thus a 1-1 class for an afternoon with someone who can sharpen what you do right, point out ways other than how you presently do something which may get integreated into your overall
to be shown where you are wasting time and how to work in others waus.
martial arts helps for learning to walk side/back, as needed smoothly witout tying yourself up.
for this i can show you, but a class will instill muscle memory.
and as any event will occure with variences, you act/react is a growing, changing combination of motions.
and all this happens fast....from "hay--buddy gotta match" to his knife and your gun and....under 2 seconds.
the statement many have said about falling back onto training is greatly true.
think how many things will occure in that 2 seconds and with no training you would need a lok of luck to come out on top, uninjured.
---your question; given some training---you will have a 'feel' for how to position yourself having 'read' the situation and the work area.
without training you would be more likely to stand in place. or run away. don't laugh--if it gets you away from the problem uninjured--it works.
to practice moving and shooting
learn to aim with your eyes. search that rather than me retype it pease.
it learns fast and is not difficult to be hitting 6" paperplates on IDPA target boards after a couple of range trips.