I've been searching for a specific fic where Tony seems to be in an alternate timeline or something. It's at least a world in which he doesn't exist. I'm pretty sure it was Loki's doing. And I think I remember Nick Fury not believing him and basically locking him up, cue Upset Tony where everything is spiraling out of control. It's not "To Be Undone" by Adenil (would recommend btw). Please, help me! I can't find it anywhere, and I'm starting to wonder if it's all in my head!
I found it! "The World That Forgot Tony Stark" by shinkonokokoro
HOWEVER, if anyone has any recommendations that seem similar, I'm open to them!!!