stupid map generater donet work!!!!! healp me pleas?

while true do
    local sides = script.Parent.Folder
    local Left = sides:FindFirstChild("Left")
    local Right = sides:FindFirstChild("Right")
    local Up = sides:FindFirstChild("Up")
    local Down = sides:FindFirstChild("Down")
    wait(0.2)   
    local side2pic = math.random(1,4)
    if Left or Right or Up or Down then
    if side2pic == 1 then
        if Left then
        local partclone = game.Lighting.PartOfMap:Clone()
        wait()      
        partclone.Part.Anchored = true
        partclone.Part.Size = Vector3.new(15.86, math.random(0.05,3), 19.21)
        partclone.Parent = workspace.Map
        partclone.Part.Position = script.Parent.Position + Vector3.new(15.881,0,0)
        Left:Destroy()
        partclone.Part.Folder.Right:Destroy()
        elseif side2pic == 2 then
        if Right then
        local partclone2 = game.Lighting.PartOfMap:Clone()
        wait()      
        partclone2.Part.Anchored = true
        partclone2.Part.Size = Vector3.new(15.86, math.random(0.05,3), 19.21)
        partclone2.Parent = workspace.Map
        partclone2.Part.Position = script.Parent.Position + Vector3.new(-15.881,0,0)
        Right:Destroy()
        partclone2.Part.Folder.Left:Destroy()
        elseif side2pic == 3 then
        if Up then
        local partclone3 = game.Lighting.PartOfMap:Clone()
        wait()      
        partclone3.Part.Anchored = true
        partclone3.Part.Size = Vector3.new(15.86, math.random(0.05,3), 19.21)
        partclone3.Parent = workspace.Map
        partclone3.Part.Position = script.Parent.Position + Vector3.new(0,0,19.095)
        Up:Destroy()
        partclone3.Part.Folder.Down:Destroy()
        elseif side2pic == 4 then
        if Down then
        local partclone4 = game.Lighting.PartOfMap:Clone()
        wait()      
        partclone4.Part.Anchored = true
        partclone4.Part.Size = Vector3.new(15.86, math.random(0.05,3), 19.21)
        partclone4.Parent = workspace.Map
        partclone4.Part.Position = script.Parent.Position + Vector3.new(0,0,-19.095)
        Down:Destroy()
        partclone4.Part.Folder.Up:Destroy()
        else
            script.Disabled = true
        end
        end
        end
        end
        end
        end
end

it only spawns parts that go left, and doesn't spawn in other directions