Google deleted a guys entire account for having pictures of his own son in the pool. Google also deleted a colleague's master thesis because he allegedly had a pirated book in his Google Drive - he owned the book, we have local stores that sell .epubs.

Now Microsoft deleted a LibreOffice's developer account.

Do you know what all of these examples have in common? Appealing doesn't work, "your" files were never yours if you give up control to a corporation, US big tech can't be trusted.

You don't have to go fully libre software (though maybe you should!) but at the very least use software that isn't taking your content hostage: have local copies, only accept local copies that are automated and using open formats.