Help with an entire body facing script for r15, that doesnt interfere with walking?

I'm trying to make a script where an r15 NPC turns their entire body to look at the player, but they can only turn their body if they aren't already moving.

The NPC is supposed to go on a patrol, and when it stops at certain corners, it can face the player. It would also be good if the NPC went back to it's original rotation if the player is out of the range, like if the NPC was facing forward at the wall. It would go back after the player has left.

I have the body gyro but the aiming script I try don't seem to work, they always just face towards the side and don't seem to look at me.

this is the aiming script i have

function findTorso(pos)
    local torso = nil
    local dist = 1000
    local child = workspace:children()
    for i=1, #child do
        if child[i].className == "Model" then
            local h = child[i]:findFirstChild("Humanoid")
            if h ~= nil then
                local check = child[i]:findFirstChild("Torso")
                if check ~= nil then
                    if (check.Position - pos).magnitude < dist then
                        torso = check
                        dist = (check.Position - pos).magnitude
                    end
                end
            end
        end
    end
    return torso
end

while true do
    wait()
    local torso = findTorso(script.Parent.Position)
    if torso ~= nil then
        script.Parent.CFrame = CFrame.new(script.Parent.Position, torso.Position)
    end
end

and the gyro is set to 0,inf,0