How to lock a ragdoll to an axis?

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1

I have this 2D game, in which I obviously do not want the players to go to a different X axis.
When I ragdoll, the following happens:


So I tried making something to lock it in the axis (the following function runs on RenderStepped):

local function OnUpdate()
	local Character = LocalPlayer.Character
	if Character and Character:FindFirstChildOfClass("Humanoid") then
		local Force = Character.PrimaryPart:FindFirstChildOfClass("VectorForce")
		if Force == nil then
			local Att = Instance.new("Attachment", Character.PrimaryPart)
			Force = Instance.new("VectorForce")
			Force.ApplyAtCenterOfMass = true
			Force.Force = Vector3.new(0, 8700, 0)
			Force.Attachment0 = Att
			Force.RelativeTo = Enum.ActuatorRelativeTo.World
			Force.Parent = Character.PrimaryPart
		end
		local movementDirection = Left - Right
		local moveVector = Vector3.new(movementDirection, 0, 0)
		local currentPosition = Character.PrimaryPart.CFrame.Position
		
		if Character["Humanoid"].FloorMaterial ~= Enum.Material.Air then
			if movementDirection ~= 0 then
				lastX = movementDirection
			end
			Character.Humanoid:Move(moveVector, false)
		end
		if lastX ~= 0 and Character["Humanoid"]:GetState() ~= Enum.HumanoidStateType.Physics then
			Character:SetPrimaryPartCFrame(CFrame.new(Vector3.new(currentPosition.X, currentPosition.Y, -2), currentPosition + Vector3.new(lastX, 0, 0)))
		elseif Character["Humanoid"]:GetState() == Enum.HumanoidStateType.Physics then --it is ragdolled
			Character:SetPrimaryPartCFrame(CFrame.new(Character.PrimaryPart.CFrame.Position.X, Character.PrimaryPart.CFrame.Position.Y, -2))
		end
	end
end

Which, makes this:


Which is obviously not the desired result.

I would like to know how to make this work. Thank you for your time, in advance!