All people sin. But at the same time, you are not defined by your sin. That is secondary. Your primary identity is a beloved son or daughter of God, the creator of the universe and father of all. Accepting Jesus’s free gift of grace reconciles you from your sin.
So I want to caution you about calling yourself a sinner.
Click here for audio reflection - https://soundcloud.com/prayfortwo/pray-for-two-are-you-a-sinner
Click here for full text - http://www.godislove.blog/prayfor2/2020/1/14/are-you-a-sinner