Sequoia 15.6 update on MacBook has deleted all my Word docs since 2022
The Sequoia 15.6 update for my MacBook which was out on 30th July 2025, completed but did need a couple of restarts. A couple of days later when I went to retrieve a letter I'd written on 28th, it wasn't where I'd saved it. I just assumed I'd been careless and not saved it at all. However, when checking 'Recent' in Microsoft Word it was there but came up with this message 'This document has been deleted or is not currently accessible'
Sadly, I then found a few days later when going to pick up on an assignment, that every Word document (apart from very old stuff 2013) has completely vanished. I've been through Apple Support and Microsoft support and spent around 4 hours on the phone yesterday going through all the suggested fixes. I've been left with an email from Apple saying 'glad we were able to help you' and reminding me to use Time Machine (sadly I hadn't been as I thought everything was in the cloud). Microsoft told me to take it to a tech expert or try data recovery software after their attempts failed.
This has left me with all my last 3 years of work missing (some can be retrieved through college), lost letters, invoices etc. It's very frustrating and upsetting! Any other suggestions please, as I'm reluctant to leave my MacBook and password with a computer shop.