If a person is born again, can they and do they still sin?. Yes or No.
When a person is born again.... they become "A new Creation in Christ"., "one with God"...."made righteous".
Sin...... is not a part of this Spiritual union with God, because "God hath made Jesus to be sin for us"... which dealt with all sin, for all time.
He, Christ on the Cross has our sin, 2000 yrs ago..... and the born are become, for eternity....= "the Righteousness of God, in Christ".
Unbelievers, still "under the law" still have their sin..........while the Born again, are "not under the law but under Grace" and are "made righteous"....forever.
What you are not understanding, Ronald, is that your mind and your body , is not the Son/Daughter of God, born again.
So, you still only see yourself as.....>your thinking, and did you control it right now, and 10 minutes from now, as who you are, vs being born again, as a "New Creation". "in Christ".
However, God does not see your thinking or your body as the "Son/Daughter of God".... =BORN AGAIN.
God only sees the BORN AGAIN = as a "New Creation in Christ", that is "seated in heavenly places", """ in Christ"""
So, your issue is not sin. (if you are truly born again).
Its an inability to understand that God only sees you (if you are born again) as "made righteous", "one With God".
You do not see yourself "in Christ" as God has caused all the born again to become.
You can pretend you do, but you dont, yet.
YOU instead see yourself as a sinner, and that is the opposite of "in Christ".
God sees the born again, only as a "new Creation in Christ"..
You have to renew your mind, Ronald.... so that you only SEE YOURSELF exactly and always as God has recreated you to be SPIRITUALLY, as born again, "in Christ"... "Made Righteous"..