How would I go about playing a walking animation for a custom rig?

Hello, so I've got this custom rig with a following script in it (not sure if that's necessary but I'll drop it at the bottom) and I'm wondering how I would go about playing a certain animation when they are walking. So far I have these 2 that sort of work together.

function onwalking(speed)
    if speed <= 0 then
        script.Parent.XenAnim.Disabled = true
    end
end

and then there's this one that it's disabling

local anim = script.Parent.Humanoid:Loadanimation(script.Test)

if script.Parent.XenAnim.Disabled == false then
    anim:Play()
end 

as well as the following script

function findNearestTorso(pos)
    local list = game.Workspace:children()
    local torso = nil
    local dist = 45
    local temp = nil
    local human = nil
    local temp2 = nil
    for x = 1, #list do
        temp2 = list[x] 
        if (temp2.className == "Model") and (temp2 ~= script.Parent) then
            temp = temp2:findFirstChild("HumanoidRootPart")
            human = temp2:findFirstChild("Humanoid")
            if (temp ~= nil) and (human ~= nil) and (human.Health > 0) then
                if (temp.Position - pos).magnitude < dist then
                    torso = temp
                    dist = (temp.Position - pos).magnitude
                end
            end
        end
    end
    return torso
end




while wait() do
    wait(1)
    local target = findNearestTorso(script.Parent.HumanoidRootPart.Position)
    if target ~= nil then
        script.Parent.Humanoid:MoveTo(target.Position, target)
    end

end

These are all regular scripts directly parented to the model itself. Thank you!