Having Trouble pivoting the player's shoulders to face their mouse

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#1

I’ve wanted the player’s shoulders to pivot around their torso, facing their mouse on the X(?) axis.. I’m not that fluent in CFrame/Motor6D terminology so I’ve made a video that hopefully explains what I’m trying to describe below:
Goal|image

I have tried to read up on the Developer Documentation, but most information is stuff I can’t really understand and things that don’t help me. I’ve tried using a solution I found online (which turned out to be undesirable as you can see in the video below)

The bad code that changes the Motor6D properties:

-- Pre-defined
local root: BasePart = character:WaitForChild("HumanoidRootPart")
local rshoulder: Motor6D = torso:WaitForChild("Right Shoulder")
local lshoulder: Motor6D = torso:WaitForChild("Left Shoulder")
local RC0, LC0 = CFrame.new(1, 0.5, 0, 0, 0, 1, 0, 1, -0, -1, 0, 0), CFrame.new(-1, 0.5, 0, 0, 0, -1, 0, 1, 0, 1, 0, 0)
local RC1, LC1 = CFrame.new(-.5, .5, 0, 0, 0, 1, 0, 1, 0, -1, 0, 0), CFrame.new(.5, .5, 0, 0, 0, -1, 0, 1, 0, 1, 0, 0)

-- Runs in a Renderstep loop
local rootJoint: Motor6D = root:FindFirstChild("RootJoint")

local cDir = root:GetPivot():ToObjectSpace(mouse.Origin).LookVector
local _, _, z = rootJoint.Transform:ToOrientation()

rshoulder.C0 = CFrame.lookAt(RC0.Position, cDir * 400) * CFrame.Angles(0, math.rad(90) + z, 0)
lshoulder.C0 = CFrame.lookAt(LC0.Position, cDir * 400) * CFrame.Angles(0, -math.rad(90) + z, 0)

All the other solutions I’ve thought of so far haven’t gone anywhere and I’ve come to a roadblock in my mind for thinking of/finding new ones across the internet

EDIT: made some wording changes and fixed some inaccuracies

#2

I still haven’t found any solutions and I don’t know what to do in terms of getting people to be able to see this again. Sorry if this is considered ‘necroposting’

#3

the l shoulder is also the right shoulder according to ur script?.

#4

Whoops, didn’t catch that. Since this code was from a month ago I’ve already fixed this, but forgot to update the DevForum post. Thanks.

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