LOL, the verse does not say there is none who ever understands they are sinners and need God. All the verse says is everyone lacks full understanding, we see through a glass darkly, and we all do not seek God all the time or when we are sinning for all of us have turned aside from the path of righteousness at some point.
To rip a verse out of context, and then claim some out of context meaning, is simply an exercise in
eisegesis.
Is it wrong to believe fallen people can seek God and trust in Christ?
John 6:28-29 NET
So then they said to him,
"What must we do to accomplish the deeds God requires?" Jesus replied,
"This is the deed God requires - to believe in the one whom he sent."
Some claim God requires the lost to do what the lost are unable to do. But mainstream Christians believe that everyone believing into Him will not perish and have everlasting life. Jesus said, your faith has saved you. Not "the faith God instilled via irresistible grace has saved you.
Scripture says the lost are saved "through" or on the basis of faith. Scripture says God credits the faith of those that believe God raised Jesus from the dead, based on His discernment.
Some have God crediting the faith He instilled. Nonsense.