Premiere - Not letting me delete video

This is really frusturating because I have looked everywhere for a solution and nothing. Here is the problem I am having:

So I've completed editing the episode, everything has been exported and I've closed Premiere, shut down and reused my computer for around two weeks, and so on. In fact, I wasn't even on Premiere since that time. However, for no reason at all, I cannot delete the file even though it isn't open. I have Windows 11(or 10, I honestly don't know I'm not a computer person), and I keep getting the error message "This action can't be completed because the file is open in Adobe Premiere Pro 2023." Premiere isn't even running. And for some reason, all of the other videos that were in the same project have all been deleted.. except this one? I've checked task manager and Premiere isn't running. I can't delete, get rid of, or even move the file from the folder it is in. I even went inside the project, deleted the entire timeline, videos attached, and then the project itself. Nothing. The video is somehow still running in Premiere.. even if the entire project is gone and Premiere isn't running. Does anyone know why this is happening? Or why it only affects some videos imported into Premiere, but not others that are very very similar?