You should go to iCloud to see if your lost files are backed up previously or restore the files from the backup if you have one. If there is neither, then it's a pity that the files are all gone away and you have no chance to recover them back.
Take care~
A tutorial helps Mac users to resolve the issue that macOS Sequoia can’t open Microsoft files and why this happens. Meanwhile, it tells how to recover the files before fixing.
Boot your Mac into Single User Mode and use Mac Single User Mode to repair hard disk. And offers the guide to use Mac Single User Mode command.