Libre office does offer sharing, and RBAC can be handled at the storage level.
https://help.libreoffice.org/latest/en-US/text/scalc/01/shared_spreadsheet.html
There are other tools for PII and PHI scanning and this is part of foundry, not Office. You pay more for that.










With no courts, no congress and no rule of law, there are no deals possible with Americans. They can’t be trusted and you have no recourse.
Better to just not deal with them at all.