What was the relationship between Annas and Jesus?
On the night they arrested him, they took Jesus first to the house of Annas. Then Annas sent him bound to Caiaphas. John 18:12-13, 24
What the Bible says
John 18:13
And they led him away to Annas first, for he was father in law to Caiphas, who was the high priest of that year.
John 18:24
And Annas sent him bound to Caiphas the high priest.
Douay-Rheims Bible (Challoner revision), public domain.
What the Church teaches
The Church teaches that the death of Jesus cannot be blamed on all the Jews of that time. Nor on the Jews of today.
Catechism 597 · Catechism of the Catholic Church