Unable to access External Drives and Disk Utility after updating to macOS Sonoma.

I lost an 8TB hard drive just after the upgrade to Sonoma. It was formatted for Time Machine in APFS - you don't get an option to change format style on a new drive for Time Machine and also a 4TB Mac extended journaled disk, and a 2TB WD exFAT.

One after another they started to drop off and for no reason. Apple support - what support? - you may as well p@ss into the wind! No one wants to acknowledge this or do they? You get a case number and that's it. I tried recovery with various software programs.

You fork out thousands of €uro for the computer which they say will do everything you need, you find out then they no longer come with large amounts of memory. You buy ext. hdd's or ssd's more hundreds if not another thousand €uro for storage, not to mention extra cloud storage for emergency contingency.

My computer is less than 4 months and I wonder what next.... maybe the internal ssd or the M1 or M2 chip just as the computer passes the final days of its warranty cover.

A clear statement is needed from this company what is causing the problem and when it will be fixed, people do not have endless amounts of money to throw after bad.