How to disable the player bodies want to stay upright?

Im making a game where the players body needs to have complete 360 degree rotation in all directions, but due to some of roblox's default code the players character has a default "push" to stay standing up, and if forced over it does that ragdolling thing where you cant control your player for a few seconds.

game:GetService("RunService").RenderStepped:connect(function()
    uis.MouseBehavior = Enum.MouseBehavior.LockCenter;
    if character then
        local root = character.HumanoidRootPart
        if root then
            root.CFrame = CFrame.new(root.CFrame.p,root.CFrame.p+Vector3.new(cam.CFrame.lookVector.X,cam.CFrame.lookVector.Y,cam.CFrame.lookVector.Z))
        end
    end
end

This is the code I have that makes the player character have the same rotation as the camera, and it works well but when i try and look up or down the players character has that default push back down so i cant look up or down.