Keywords quit unexpectedly and won't open

I recently switched from using office to iWorks but now keynote, pages and numbers won't open and just say quit unexpectedly when I try and open them. I can't open any existing documents or create new ones and I really need to access my documents for work.

All the apps are the latest version and there's no updates for them, I've tried uninstalling and then reinstalling but that didn't do anything. If anybody knows how to fix this issue please let me know. I'm using a MacBook Air 2017 on macOS Big Sur 11.1