Rom.7 shows how we go to war against the evil desires of the flesh. It's a struggle as long as we are in this body, which is not to be used for sinful purposes any longer. Jesus tells us to cut what defiles us out of our lives (Mk.9:43-47).What I am saying, although we are born again, we do, at times, fail to put that armor on when we step out into the world.
If you read the verses 1 through 12, they caushion us that although they were all baptised with Moses in the cloud and the sea, with many of them God was not pleased, for they were overthrown in the wilderness, saying these were our examples, to the intent we should not lust after evil things, as they also lusted.
When we have been born again, we still do carry the baggage of our fleshly nature as Paul explains in Rom 7:18-25.
I've read 1Cor.10:1-12. The example is, after being freed from bondage, those people were damned (Heb.3:7-19).
I hear what you're saying, but were being made into the image of Christ, so this idea that we're always going to fail is a lie from the devil and has to go. It has to go, along with this asnine idea that Jesus didn't turn his anger away from people who deserved to die. Jesus's whole ministry shows him turning the other cheek to his enemies, not judging his enemies, loving his enemies, to win over his enemies.