Hmmm... well I would love to start with an example if you have one. Is there one you would like to discuss?
I agree prophecies are conditional. In fact that's the very function of a prophecy, a prophecy is a mechanism, a lever, to affect a future possibility.
I.e., God needed Peter to be strong after the crucifixion. Peter was going to be a major player in the spreading of the gospel but Peter was weak and God knew that. God didn't want Peter to be weak He needed Peter to be strong.
So God used a prophecy for Peter that was a "win win" for God.
God told Peter that Peter would deny Him three times before the rooster crowed.
Matthew 26:34 Jesus said to him, “Assuredly, I say to you that this night, before the rooster crows, you will deny Me three times.”
Peter said that wouldn't be the case....
Matthew 26:35 Peter said to Him, “Even if I have to die with You, I will not deny You!” And so said all the disciples.
God, knowing everything knowable knew Peter was weak and Peter would most likely fail as predicted.
But either way God would get His desired outcome and here is how....
IF... one of the times Peter was asked about Christ Peter had realized... "ok, this is it, this what the Lord spoke of, He is Lord of all I repent! I do not deny Him!!!" BINGO! The Lord has strengthened Peters resolve and affected his will to more closely conform to God's will.
IF... Peter fulfills the prophecy as stated Peter then knows that the Lord knew Peters own heart better than Peter Himself then... BINGO! The Lord has strengthened Peters resolve and affected his will to more closely conform to God's will.
God wins either way but both options were real possibilities/contengencies. And most importantly we see that God is attempting to influence our/Peters will, God hasn't already seen the outcome in advance, for if He had, there wouldn't have been any reason for Him to interact with Peter via telling Him of the prophecy.
Prophecy is a mechanism, a lever used by God to affect our will.