Christ did not set you free so you could follow a new list of rules. He set you free to be free. Free from the bondage of the Law, free from the power of sin, free from religious performance pressure.
Paul warns here: Don't let yourself be put under a yoke again. Going back to the Law means leaving grace. That's not a threat but a warning out of love. Freedom must be guarded.
Stand firm in your freedom today. Let no one put you back in chains.