How do I make a jumping animation work?

I'm making a game where the character is 2D animated instead of 3D. Actions like walking, dying, jumping etc will change the pose of the 2D character.

Unfortunately, jumping hasn't worked at all for me at all. Here is the code:

local animbody = script.Parent.HumanoidRootPart.BodyUI --The 2D animated rig
local humanoid = script.Parent.Humanoid

humanoid.Running:connect(function(speed) -- Return value; speed of the running
		if speed > 0 then
			animbody.ImageLabel.Image = "rbxassetid://"..6811778352 --Changes to running pose when speed is greater than 0
			animbody.ImageLabel.Size = UDim2.new(0.6,0, 0.691, 0)
	elseif speed == 0 then
			animbody.ImageLabel.Image = "rbxassetid://"..6811242425 --Changes to idle pose when speed is 0
			animbody.ImageLabel.Size = UDim2.new(0.578, 0,0.691, 0)
		end
end)

local isJumping = false

humanoid.StateChanged:Connect(function(oldState, newState)
	if newState == Enum.HumanoidStateType.Jumping then
		isJumping = true
		animbody.ImageLabel.Image = "rbxassetid://"..6811706850
		animbody.ImageLabel.Size = UDim2.new(0.578, 0,0.696, 0)
	elseif newState	== Enum.HumanoidStateType.Landed then
		isJumping = false
		animbody.ImageLabel.Image = "rbxassetid://"..6811242425
		animbody.ImageLabel.Size = UDim2.new(0.578, 0,0.691, 0)
	end
end)

humanoid.Died:connect(function()
	local charParts = script.Parent:GetChildren()
	
	for i, objects in ipairs(charParts) do
		if objects:IsA("Part") then
			objects.Anchored = true
		end
	end
	animbody.ImageLabel.Image = "rbxassetid://"..6821697622 --Changes to death pose when speed is 0
	animbody.ImageLabel.Size = UDim2.new(0.578, 0,0.691, 0)	
end)