Mouse viewing and WASD movement describe different changes in a three dimensional scene, even when both make the picture move.
Recognize two kinds of change
Mini Shooter Zombie Survival lists WASD for walking and the mouse for looking around and shooting. Those controls can both change the picture, but they do not express the same intention. Looking changes which direction you inspect; walking changes your position. Before combining them during a crowded encounter, recognize that distinction. A target leaving the center of the view does not, by itself, explain whether you moved away or merely looked elsewhere.
Use the environment to read the difference
Follow the live introduction and compare an intentional look with an intentional movement where the scene allows you to observe them. Notice how a recognizable object changes relative to the view in each case. This is a control reading exercise rather than a claim about a safe practice area. You are learning which input produced which kind of change, so a surprising camera view does not automatically become evidence of a failed walking key.
Combine the intentions deliberately
Once the individual controls are clear, describe a combined action in two parts: where you intend to move and where you intend to look. Then inspect the actual response. The game determines how movement direction relates to the current view; do not import that relationship from another shooter. A clear distinction between position and orientation gives the next encounter a firmer input vocabulary than treating every screen change as undifferentiated motion.
Shooting