Answers:
1. Sin
2. We don’t... God fixes it.
Exactly- this is Satan’s Domain for now- He runs the show here on earth within limits of God’s allowances- but in the end God ‘fixes’ the world- or rather creates a new heaven and new earth- this time without possibility of sin as we will be in our glorified bodies for those who accept Christ
Answer. It’s always been like that and always gonna be like that until the end.
If one includes curses, I sin 200 times a week.
But we try to get better.
One day (sooner than we tend to think) we won’t be here and God will decide how bad our sins were and if we were repentant for the ones we did make.
Best advice I ever heard: Be in this world. Not of it.