The lost sheep was never found. The sheep refused to follow the shepherd. The sheep died before it was found by the shepherd and lost it's chance of salvation. The lost sheep was saved but the the other 99 sheep were eaten by wolves while the shepherd was away. And then the formerly lost sheep died of grief because all his friends were dead
Many lost sons never return home.
My view is that those parables are not separate but lets call it a big salvation teaching.
That one sheep couldn't find the flock. Perhaps didn't even tried too. But that's not important because the parable tells us the shepherd decides he is going to find that sheep.
--> Shepherd decides how many are lost. Not the sheep.
--> The parable also tells us any shepherd will go searching. No questions asked.
The woman in the parable of the lost coin is about a woman searching for a totally passive coin. The coin didn't even make itself lost. Neither did it wanted to be lost or found. When the woman found the coin she was very happy.
--> The coin had zero input on its fate.
The prodigal son sort of rejected his father. He chooses to be cut off. The way he spends his money shows me he clearly was on the wide road. And that road completely destroyed him financially. Did his father reject him after this destruction/death?
No, he was extra happy when his son returned.
--> The last chance is never revoked.
Shepard=owner of sheep. Woman=owner of coins. Father=owner of son.
They all were sad when their "thing" was lost. They all celebrated when it was found again.
So no matter how many things Father lost on the wide road; He'll eventually finds them again.
So I think many things can be explained in different ways. And as isolated 'facts' the various explanations can be acceptable. But when when all those facts are grouped together only one conclusion can be drawn....
A Savior is born!