So, today I've learnt that if you delete a file from OneDrive, it also deletes it from your computer with no chance of recovering it. In other news, I lost half the files on my computer.

Thankfully my lettering files are backed up in Dropbox, but all my personal files were automatically synced with OneDrive (for reasons I don't know because I never agreed to that, I guess it's native to Windows 11). I'm pretty bummed right now.