Well . . . if Paul is right, then you need to have "huge disrespect" for how you have been misunderstanding him.
So, yes Jesus says He came to fulfill the law.
What I consider is, yes the Law is our schoolmaster. And its purpose is to bring us to Jesus, Paul makes clear > "Therefore the law was our tutor to bring us to Christ, that we might be justified by faith." (Galatians 3:24) Once the law has done its job, it is fulfilled. Jesus now does all that the law cannot do.
So, when you read this, please pay attention to the purpose, that Paul gives, that the "schoolmaster" serves the purpose of bringing us to Christ. Once we have been brought to Messiah, now we have Jesus to take over with better than what the Law can do. So, He is fulfilling the Law, by taking us on from there.
And do you know that it says Jesus "broke the Sabbath"? John 5:18. He told that healed guy to pick up and carry his bed. That was doing work, on the Sabbath. He could have left the bed until another day and come back for it.
So, you might consider how much Jesus honors Paul. Paul was a Jew. And God's grace in Paul took care of him, very well > 2 Corinthians 12:7-15. God's grace is the effect of God's own love "in our hearts" (Romans 5:5) changing us to be in the image of Jesus and having us sharing with and relating with our Father as Jesus in us has us lovingly obeying our Father while also loving any and all people like Jesus in us does. This Jesus in us is the same in both Jews and Gentiles!!!!
So, I can't tell you that Jews have any real difference from Gentiles > I mean Jews who have Jesus living in us, like Paul did > Galatians 2:20. He was an example for Gentiles, though he was a Jew > 1 Corinthians 11:1. So, I would say that whatever may be a difference does not make much difference

. . . not for us Jews and Gentiles in Christ > as Peter a Jew said > Acts 15:9.