Lock camera to a part and then have it follow a player?

Ive been reading all over the wiki and trying to figure this out because it has to be possible.

I want the camera to lock to a part, and then basically rotate around the part according to where the player is. Do you know what I mean? Like I want the camera to follow the player but stay locked to the part.

So ive tried 3 different scripts and they all do different things but not the thing I want them to do.

Script 1 (This script doesnt work at all really)

local RunService = game:GetService("RunService")
local Players = game:GetService("Players")

local OFFSET = Vector3.new(40,40,40) -- Position of the camera
local FIELD_OF_IEW = 40

local player = Players.LocalPlayer
local camera = game.Workspace.CurrentCamera

------------------------------------------------

camera.FieldOfView = FIELD_OF_VIEW

local function onRenderStep()
	local character = player.Character
	if character then
		local humanoidRootPart = player:FindFirstChild("HumanoidRootPart")
		if humanoidRootPart then
			local playerPosition = humanoidRootPart.Position
			local cameraPosition = playerPosition + OFFSET
			camera.CoordinateFrame = CFrame.new(cameraPosition, playerPosition)
		end
	end
end

RunService:BindToRenderStep("Camera", Enum.RenderPriority.Camera.Value, onRenderStep)

Script 2 (This locks the camera to the player but not to another part)

local Camera = game.Workspace.CurrentCamera
local Player = game.Players.LocalPlayer

repeat
  wait()
until Player.Character

local Character = Player.Character
local Player_Torso = Character.UpperTorso

-------------------------------------------------------------------

Camera.CameraType = Enum.CameraType.Scriptable
Camera.CameraSubject = Player_Torso

game:GetService("RunService").RenderStepped:connect(function()
	if Player.Character and Player.Character:FindFirstChild('UpperTorso') then
	Camera.CFrame = CFrame.new(Player_Torso.CFrame.X, Player_Torso.CFrame.Y + 2, Player_Torso.CFrame.Z + 14)
	end
end)

Script 3 (This locks the camera to a part but then the camera doesnt follow the player)

local Camera = game.Workspace.CurrentCamera
local Player = game.Players.LocalPlayer
local Lock = game.Workspace.CameraLock

-------------------------------------------------------------------

Camera.CameraType = Enum.CameraType.Scriptable

game:GetService("RunService").RenderStepped:connect(function()
	if Player.Character and Player.Character:FindFirstChild('Humanoid') then
	Camera.CameraSubject = Lock
	Camera.CFrame = CFrame.new(Lock.CFrame.X, Lock.CFrame.Y + 5, Lock.CFrame.Z + 20)
	end
end)

Thank you for youre time if you want some more info please do ask.

I also just recently tried this one but it doesnt work either.. I think I am getting close

local Camera = game.Workspace.CurrentCamera
local Lock = game.Workspace.CameraLock

local Player = game.Players.LocalPlayer
local Character = Player.Character
local Player_Head = Character.UpperTorso

-------------------------------------------------------------------

Camera.CameraType = Enum.CameraType.Scriptable

game:GetService("RunService").RenderStepped:connect(function()
	if Player.Character and Player.Character:FindFirstChild('Humanoid') then
	Camera.CameraSubject = Lock
	Camera.Focus = CFrame.new(Player_Head.CFrame.X + 0, Player_Head.CFrame.Y + 0, Player_Head.CFrame.Z + 0)
	Camera.CFrame = CFrame.new(Lock.CFrame.X, Lock.CFrame.Y + 5, Lock.CFrame.Z + 20)
	end
end)