What does Deuteronomy 31:29 mean?

I know that after I’m gone, you’re going to turn away from the path I’ve shown you. You’ll end up doing things that go against what God wants, and that’s going to bring trouble on you in the future. I’m telling you this now, because I know you’ll end up making choices that make God angry by what you do. Deuteronomy 31:29 - Modern Text Bible

(Moses is warning the people that after his death, they’ll abandon God’s ways and bring hardship on themselves by turning away from what’s right.)