Sequence won't open

Hello, just want to know if this has happened to anyone else before too. I think my file was corrupted from Premiere Pro not functioning.

I have a sequence (B) in a sequence (A). I went to try to open Sequence B, and it would preview it in the project window but not really open it. Closing the project and re-opening it then caused the Sequence B to already be open, but not Sequence A. So I tried searching for Sequence A. After scrolling through my entire list in the project window (because every Premiere Pro user knows that the search bar doesn’t actually work), I found it, but it did the same glitch and refused to open Sequence A. Restarted my whole computer and it went back and forth deciding which to open and which wouldn’t.

What can I do if this ever happens? Did my file get corrupted somehow?

One last note, is that as always Premiere Pro rearranged the order of my sequences upon startup. But this time an usual amount were not opened. This has happened in After Effects before too but I didn’t think to restart it, I just ruled it off as Premiere doing its thing. So I wonder if that has to do with it too.

Thank you to all who can help or have any insight.