The point I am getting at is that on the one hand Paul is saying ALL have sinned because we are all descended from Adam but in another he says many, not all, which would imply that not every single person has sinned.
If evangelicals will insist on reading the first verse literally, they are forced to read the second verse literally. So which is which, is it all or many?
Where does it say in the second verse that some are not sinners? It says that many are MADE righteous.
2 Corinthians 5:21 For He made Him who knew no sin to be sin for us, that we might become the righteousness of God in Him.
1 Timothy 1:12 ¶ And I thank Christ Jesus our Lord who has enabled me, because He counted me faithful, putting me into the ministry,
13 although I was formerly a blasphemer, a persecutor, and an insolent man; but I obtained mercy because I did it ignorantly in unbelief.
14 And the grace of our Lord was exceedingly abundant, with faith and love which are in Christ Jesus.
15 This is a faithful saying and worthy of all acceptance, that Christ Jesus came into the world to save sinners, of whom I am chief.
16 However, for this reason I obtained mercy, that in me first Jesus Christ might show all longsuffering, as a pattern to those who are going to believe on Him for everlasting life.
17 Now to the King eternal, immortal, invisible, to God who alone is wise, be honor and glory forever and ever. Amen.
Reading in context your quote in Romans 3 —
Romans 3:20 Therefore by the deeds of the law no flesh will be justified in His sight, for by the law is the knowledge of sin.
21 But now the righteousness of God apart from the law is revealed, being witnessed by the Law and the Prophets,
22 even the righteousness of God,
through faith in Jesus Christ, to all and on all who believe. For there is no difference;
23 for all have sinned and fall short of the glory of God,
24 **being justified freely **by His grace through the redemption that is in Christ Jesus,
25 whom God set forth as a propitiation by His blood, through faith, to demonstrate
His righteousness, because in His forbearance God had passed over the sins that were previously committed,
26 to demonstrate at the present time
His righteousness, that He might be just and the
justifier of the one who has faith in Jesus.