Hi there,
Hope youa re doing well and thanks for reaching out. We are sorry to hear that you’re going through this issue.
When you uninstall the Acrobat app from your iPhone, any files that were saved only inside the app (and not backed up to iCloud or Adobe’s cloud) get deleted too. Unfortunately, iPhones don’t show a clear warning about this, and there’s no built-in way to get those files back once the app is removed.
I really wish there was an easy way to recover them, but if they weren’t backed up anywhere else, they’re likely gone.
Hope this information will help.