I saved a file in Excel and it crashes and I can't recover my changes.

So I edit my Excel files, and save them frequently. Auto Save is on. I'm not connected to One Drive. Suddenly, Excel will crash and I've lost literally days worth of changes to my spreadsheets. Everything I've seen online has been no help at all. The changes to the files have just disappeared. Anyone else seeing this issue? I'm running Windows 11 Pro with Office Home and Student 2016.

Edit: Restore Previous Version does not work. Recover Unsaved Workbook does not work. I saved multiple times throughout the last three days and did not rely on Auto Save. All of my changes just disappeared after Excel "locked-up".