Slide down slope script not working, any changes or help?

So earlier today I was working on a slide mechanic for my game. It took a while to get an understanding of what to do, but I've run into a couple of problems when it comes to detecting a slope that goes downward.

1. Slopes arent being detected properly. 2. The boolean value (slope) seems to randomly fire true or false once the key is pressed?

I'm thinking that I'm detecting the slope incorrectly, but need further assistance on the matter.

SCRIPT:

local slope = false
local params = RaycastParams.new()
params.FilterDescendantsInstances = {workspace.Living}
params.FilterType = Enum.RaycastFilterType.Blacklist

local dist = 5
local results = workspace:Raycast(root.CFrame.p, -root.CFrame.upVector * dist, params)
if results then
    local normal = results.Normal
    local incline = Vector3.new(1, 0, 0):Cross(normal)
    if incline.Magnitude == 0 then
    incline = Vector3.new(1, 0, 0)
end
print(incline)

local angle = math.acos(Vector3.new(0, 1, 0):Dot(incline))
if angle > math.pi / 1.5 then
    slope = true
end

if slope then
    -- Slide Down Slope
    print("Yes")
else
    -- Slide For Short Distance Foward
    print("No")
    end
end

I also used: https://devforum.roblox.com/t/how-would-one-go-about-making-a-slide-mechanic/805298/2 for a guide.