He was brought before the Roman judge, He was nailed to the Cross by Roman soldiers, a Roman soldier pierced His side. All the Jews did was give Him up. Technically speaking. When people accuse Jews of killing Yeshua they don’t know why He came in the first place. Total ignorance on their part for the past two thousand centuries and is still the same today.
And despite all that Jesus still said the Jews who turned him over to the Romans had the “greater sin.” Peter says much the same thing in Acts 2.23