The word "Would" uses in text below three times.(The cases I bolded them) Could you please tell me if it is used in "imagined situations" or not? Could you please explain to me if they refer to past, present, or future tense?

There was a message from Shawn. An apology. But he’d apologized already, in my room. I had never known Shawn to apologize twice. I retrieved my journal and I wrote another entry, opposite the first, in which I revised the memory. It was a misunderstanding, I wrote. If I’d asked him to stop, he would have. But however I chose to remember it, that event would change everything. Reflecting on it now I’m amazed by it, not by what happened, but that I wrote what happened. That from somewhere inside that brittle shell—in that girl made vacant by the fiction of invincibility—there was a spark left. The words of the second entry would not obscure the words of the first. Both would remain, my memories set down alongside his. There was a boldness in not editing for consistency, in not ripping out either the one page or the other. To admit uncertainty is to admit to weakness, to powerlessness, and to believe in yourself despite both. It is a frailty, but in this frailty there is a strength: the conviction to live in your own mind, and not in someone else’s. I have often wondered if the most powerful words I wrote that night came not from anger or rage, but from doubt: I don’t know. I just don’t know. Not knowing for certain, but refusing to give way to those who claim certainty, was a privilege I had never allowed myself. My life was narrated for me by others. Their voices were forceful, emphatic, absolute. It had never occurred to me that my voice might be as strong as theirs.