Computer Shutdown Re-Set Profile Entirely

I hard shut down my laptop and when I re-opened it, Firefox seemed to have reset itself completely. My profiles were gone, my bookmarks are still present but their icons are missing, my background is missing, my extensions un-pinned, and -- naturally -- all of my tabs were closed. My original profile is completely gone, which kind of sucks, because it was pretty personalized. I think even my preference settings reversed themselves, because it tried to show me the AI chatbot on the sidebar, which I had turned off. I figured at first that it was a matter of spotty connection, because I was using my phone's hotspot at the time, but I'm now back with a solid wi-fi connection, and everything is still acting strangely. Help? How do I get my original profile back in its proper form, if possible? Or, at least, the icons to show back up on my bookmarks? I have turned everything off and back on again, as it were.