The priest did not like my question about Judas.

Why did Jesus die?

Christians believe the death of Jesus is what got us to restore our relationship with God.
Jesus died for our sins. He atoned. By his death as a man, he saved all of us.
His death was a divine plan to save mankind.
God needed Jesus to die.
If he didn’t, mankind would not have been given a second chance.

How did he die? Did he kill himself? Did he intent to die?

No, he died because Judas betrayed him.
In other words, if Judas did not betray him, Jesus would not have died on his own accord and God would have never succeeded in his plan.

So why do we hate Judas when it’s his actions that led to our salvation?

God needed Jesus to die and Judas helped God, and us.
We should be thanking Judas.
He has condemned himself to burning in hell forever for something that saved all of us.