Let's see what you teach: Just us tell us straight out.....can a true believer live any way he wants and still remain saved? Yes, or no? If you say 'yes', then you are in fact teaching that a true believer can live any way he wants. If you say, 'no'....
When a person is born again, and sealed with the Holy Spirit, He will purify the believer. Molding, teaching, instructing him on how to live, and what changes he needs to make to be a productive, fruitful Christian. Sometimes, a believer resists the promptings and corrections of the Holy Spirit, and lives in an ungodly manner. If he continues in this state, his flesh will be handed over to satan. Several times Paul mentions those who are delivered to satan. Sometimes the person turns from his ungodliness and is restored. Sometimes this may result in the physical death of the individual. It does NOT mean they lost Salvation.
When you set up a false narrative, everything that follows is false. Please recognize this.