How do i making camera bobbing like this one

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you don’t have to use spring for this, you can just lerp the camera based on the character’s velocity for the bending and some basic sine wave calculation for the bobbing

local runService = game:GetService("RunService")

local plr = game.Players.LocalPlayer
local chr = plr.Character
local humrootpart = chr:WaitForChild("HumanoidRootPart")
local hum = chr:WaitForChild("Humanoid")
local cam = workspace.Camera

local tiltSpeedZ = 0.1
local bobbingSpeed = 0.1

local tilt = 0
local sinValue = 0

function lerp(a, b, t)
	return a + (b - a) * t
end

function calculateSine(speed, intensity)
	sinValue += speed 
	if sinValue > (math.pi * 2) then sinValue = 0 end
	local sineY = intensity * math.sin(2 * sinValue)
	local sineX = intensity * math.sin(sinValue)
	local sineCFrame = CFrame.new(sineX, sineY, 0)
	return sineCFrame
end

local previousSineX = 0
local previousSineY = 0
runService.RenderStepped:Connect(function(dt)
	local movementVector = cam.CFrame:vectorToObjectSpace(humrootpart.Velocity / math.max(hum.WalkSpeed, 0.01))
	local speedModifier = (hum.WalkSpeed / 16)
	tilt = math.clamp(lerp(tilt, movementVector.X * tiltSpeedZ, 0.1), -0.25, 0.1) 

	local sineCFrame = calculateSine(bobbingSpeed * speedModifier, movementVector.Z * speedModifier)
	local lerpedSineX = lerp(previousSineX, sineCFrame.X, 0.1)
	local lerpedSineY = lerp(previousSineY, sineCFrame.Y, 0.1)

	cam.CFrame *= CFrame.Angles(0, 0, tilt) * CFrame.new(lerpedSineX, lerpedSineY, 0)
	previousSineX = lerpedSineX
	previousSineY = lerpedSineY
end)

which will create a similar effect

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