What Is Sin Really?

What is "sin?" Where did it come from? Why does it exist? Why would God allow it to exist at all? If God created everything that exists, did God create "sin?" How does "sin" impact the daily life of the believer? If I look at a woman or man, am I "sinning?" If I lie, am I "sinning?" What if I'm trying to do the right things, but I just don't get them just right, am I "sinning? Are there sins that don't deserve death or hell? What if I just make a mistake, did I sin? Do I have to ask for forgiveness every time I think I sinned? If God cannot sin because He is perfect, then why did Lucifer, who was created by God perfect, sin? Can someone or something that is perfect sin? Since there is no flaw in God, because He is perfect, then why do we, who were made in His image, sin? Is there something wrong with being made in His image? If sin is something that we do, then why does the Bible seem to say that "Sin" crouches, desires, wants to control people, has a body, reigns, has servants, uses people's bodies as instruments to do wrong, takes advantage, arouses covetous desires in people, revives, kills, has its own law, lives in people, and that it also 'sins.'"Have you ever wondered about any of these questions? Well, join me in a well-researched journey through the Bible with the goal in mind to find these answers.
I think you will enjoy the experience as much as I have.