Yes

Remember what repentance means, to turn away from your sins, so if you don’t turn away from them but continue in them, then you will live in Sin.

Repentance is a work but it's a byproduct of faith. Therefore, we're still saved by grace through faith

It is required. Repentance is not a work. This is the type of deception & poor theology that leads people to hell. The devil twists scripture so easily. Repentance is a decision to turn away from an evil lifestyle & allow Jesus to transform you based on that decision. It’s actually impossible by your own strength.

If we don’t have to how would someone read 1 John 3:6-10 , 1 John 5:18, 1 John 3:3 or Hebrews 5:9?

Yes

Repentance and believing in Christ goes hand in hand. In order to put your faith in Christ, you need to turn from having your faith in something else. That is what repentance is, it’s a natural outcome of believing in Christ. So yes and no.

Regeneration of the heart done by God alone precedes repentance/justificication by the propitiation through Christ blood. No one can come to God by their own means, we were called first.