At least part of the reason is that they are not in the Word and allowing the Word to inform their behavior. They have embraced the world’s definition of what is right and good. They have allowed the world to squeeze them into its mold, Romans 12:2, Phillips.
Psalm 119:9, 11, is still true. 40 years after I memorized it and several thousand years after it was penned by David, the Word is the only way that we will be able to live a pure, holy, life.
You can try other things. They won’t work.