16 verses have
if
in Edition Clear Qur'an by Talal Itani / Al-Qasas (The Stories)

28:9Pharaoh’s wife said, “An eye's delight for me and for you. Do not kill him; perhaps he will be useful to us, or we may adopt him as a son.” But they did not foresee.

28:16He said, “My Lord, I have wronged myself, so forgive me.” So He forgave him. He is the Forgiver, the Merciful.

28:27He said, “I want to marry you to one of these two daughters of mine, provided you work for me for eight years. But if you complete ten, that is up to you. I do not intend to impose any hardship on you. You will find me, God willing, one of the righteous.”

28:31Throw down your staff.” And when he saw it wiggling, as if it were possessed, he turned his back to flee, and did not look back. “O Moses, come forward, and do not fear, you are perfectly safe.

28:36But when Moses came to them with Our signs, clear and manifest, they said, “This is nothing but fabricated magic, and We never heard of this from our ancestors of old.”

28:39He and his troops acted arrogantly in the land, with no justification. They thought they would not be returned to Us.

28:47Otherwise, if a calamity befell them as a result of what their hands have perpetrated, they would say, “Our Lord, if only You had sent us a messenger, we would have followed Your revelations, and been among the believers.”

28:48But when the truth came to them from Us, they said, “If only he was given the like of what was given to Moses.” Did they not disbelieve in what was given to Moses in the past? They said, “Two works of magic backing one another.” And they said, “We are disbelieving in both.”

28:49Say, “Then bring a scripture from God, more conductive to guidance than both, and I will follow it, if you are truthful.”

28:50But if they fail to respond to you, know that they follow their fancies. And who is more lost than him who follows his fancy without guidance from God? God does not guide the unjust people.

28:57And they say, “If we follow the guidance with you, we will be snatched from our land.” Did We not establish for them a Safe Sanctuary, to which are brought all kinds of fruits, as provision from Ourselves? But most of them do not know.

28:63Those against whom the sentence is justified will say, “Our Lord, these are they whom we misled. We misled them, as we were misled. We beg Your forgiveness; it was not us they used to worship.”

28:64And it will be said, “Call on your partners.” And they will call on them, but they will not respond to them. And they will see the suffering. If only they were guided.

28:70And He is God. There is no god but He. To Him belongs all praise in this life, and in the next. And His is the decision, and to Him you will be returned.

28:79And he went out before his people in his splendor. Those who desired the worldly life said, “If only we possessed the likes of what Quaroon was given. He is indeed very fortunate.”

28:85He Who ordained the Quran for you will return you Home. Say, “My Lord knows best who comes with guidance, and who is in manifest error.”