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Your complete confusion WRT Acts 15 is duly noted AGAIN!
The “certain people” that came to Antioch were Pharisees, who completely demolish Torah in favor of their false laws and Ma’Assim that they arrogantly called “The Law of Moses.”
Their ‘laws’ are the Law of the Adversary.
Chapter 15 is completely about getting the new believers to hear the real books of Moses “every Sabbath Day!”
You still need the sincere milk; you are apparently not ready for the meat.
Paul taught nothing but Torah.
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“Paul taught nothing but Torah.”
Wrong, Paul taught the New Covenant and quoted the Torah.
2 Cor 3:6
6 who also made us adequate as servants of a new covenant, not of the letter but of the Spirit; for the letter kills, but the Spirit gives life.