[Sons to Glory!]

Just Googled "are believers sinners" and here are three things that came up - all good reads (and hopefully conveys it more clearly than I apparently am).

Q&A Are Believers Sinners?

Article: Saint or Sinner? Rethinking the language of our christian identity

And then this from here:

I am writing this to you, my children, so that you will not sin; but if anyone does sin, we have someone who pleads with the Father on our behalf—Jesus Christ… 1 John 2:1 TEV

God’s goal for you is that you will not sin. Notice that the Apostle John does not say “when you sin,” but if. Yes, we all fall short, and yes, while we were still sinners God saved us, but that does not mean the realm of sin is where we stay. By constantly saying, “I’m a sinner—but I’m so thankful God saved me and forgives me!”we live with a sin consciousness. If we are living according to the revelation of grace, our hearts should instead be focused on a right standing with God consciousness. As a believer, you may still sin, but you are not a sinner.

Those who keep on sinning have never known [Christ] or understood who he is…. It shows they belong to the Devil… (1 John 3:6, 8 NLT)

The Amplified Bible puts 1 John 3:6 this way: “No one who [habitually] sins has either seen or known Him….” The new covenant of grace empowers us to be free of both the penalty and power of sin so that we no longer habitually practice ungodliness. Yet sin consciousness will steer us right back into sin.