Crouch script makes player float

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#1 
local UIS = game:GetService("UserInputService")
local player = game.Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local humanoid = character:WaitForChild("Humanoid")

local crouchAnimation = Instance.new("Animation")
crouchAnimation.AnimationId = "rbxassetid://13010384197"
local crouchAnimationTrack = humanoid:LoadAnimation(crouchAnimation)

local walkAnimation = Instance.new("Animation")
walkAnimation.AnimationId = "rbxassetid://13010388879"
local walkAnimationTrack = humanoid:LoadAnimation(walkAnimation)

local CROUCH_WALKSPEED = 8

local originalWalkSpeed = humanoid.WalkSpeed

local isCrouching = false

UIS.InputBegan:Connect(function(input)
	if input.KeyCode == Enum.KeyCode.C then
		crouchAnimationTrack:Play()
		humanoid.WalkSpeed = CROUCH_WALKSPEED
		isCrouching = true
	end
end)

UIS.InputEnded:Connect(function(input)
	if input.KeyCode == Enum.KeyCode.C then
		crouchAnimationTrack:Stop()
		walkAnimationTrack:Stop()
		humanoid.WalkSpeed = originalWalkSpeed
		isCrouching = false
	end
end)

humanoid.Running:Connect(function(speed)
	if speed > 0 and isCrouching then
		crouchAnimationTrack:Stop()
		walkAnimationTrack:Play()
	elseif speed == 0 and isCrouching then
		walkAnimationTrack:Stop()
		crouchAnimationTrack:Play()
	end
end)

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