Why arent my arms working in my first person arns script?

im tryna make first person arms but they just keep falling into oblivion when cloned and are deleted if Unanchored, and if they are Anchored then they stay in 1 spot and dont follow my char

local player = game.Players.LocalPlayer
local camera = workspace.CurrentCamera
local mouse = player:GetMouse()

local ToClone = {"LeftUpperArm", "LeftLowerArm", "LeftHand", "RightUpperArm", "RightLowerArm", "RightHand"}

local function WeldArms(char, Arms)
    for i,v in pairs(ToClone) do
        if char:FindFirstChild(v) then
            local part = char[v]
            local clone = part:Clone()
            clone:ClearAllChildren()
            clone.CFrame = part.CFrame
            local weld = Instance.new("Weld", game.JointsService)
            weld.Part0 = part
            weld.Part1 = clone
            clone.Parent = Arms
            clone.Anchored = true
        end
    end
end

player.CharacterAdded:connect(function(char)
    local Arms = Instance.new("Model", workspace)
    Arms.Name = "Arms"
    WeldArms(char, Arms)
    char.Humanoid.Died:connect(function()
        Arms:Destroy()
    end)
end)