I used to think Apple Support was pretty darn good, until this happened

If you have Apple store where you are, schedule a meeting with genius bar technician. I believe Apple support has moved overseas and you may have difficulty understanding their language.

I’ve always seen research as more helpful than support, because they’re so darn incompetent 99.5% of the time. That being said, if you go to your local Apple Store if you have one, the experience is pretty amazing, I’ve never seen such a good customer experience ever, that being said, Our customer experience is more like, oh, you want a refund? I don’t know, I’m not feeling it today, I’ll just say it’s not covered or something. So maybe my standards are real low

I don't know if you can avoid data loss, with time machine probably, but apple support have articles on how to install multiple versions of macos and we can easily downgrade that way.
https://support.apple.com/en-ca/118282

Did you try grabbing the installer package directly from Apple bypassing the App Store, I’m not sure if you can do it with an IPSW, but it might work.

Sorry, I have no answer. Just this warning. I downgraded once and found that my iTunes library still behaved as if it had the more recent version. That is, the downgraded Music app could not access my music files. Beware.

it seams when it comes to blindness; the amazon support knows nothing, and it's the same with the google support.

I think siobhan said once that peple who are disabled should be in these rolls and I completely agree.

I understand it's not exactly the same but I hope you don't mind me taking over the topic a little.

These people really do frustrate me.

The thing is; I could do these jobs, I just don't want to, I prefer outdoors stuff.

here's an example of google support not knowing what they're talking about, so I speak to a woman called Maria, after explaining what was wrong with youtube, even though she could read what I wrote in the form, she got it wrong even though it was right there in front of her, I finally got through to her and after explaining that I'd be able to take a screen capture of what's going on, we hung up.

I then read her email, realise that I can't actually take the screen capture thing, explain this, send it, then send another link with others experiencing the same issue with firefox.

I get a response saying something like, Hi Brad, I'm reaching out to ask about the screen recording and I'd like to know your firefox version number.

I wrote a reply explaining that i've already gone over this and she needs to read the first message I wrote again.

Either she didn't read it, or there's a script, or something.

Another thing; a lot of these google support people have kids in the background, or just other noise, or just unprofessional things going on, it's quite off putting to be honest.

Sorry for the long reply,I just get so frustrated with support stuff.

As we’ve discussed before, I think it’s a better idea to visit an Apple Store to help with software issues. The main reason I say this is that it’s more one-on-one, and you can get them to understand your problem better than trying to explain it over the phone.

I have the 15.4 and it is fine. Try to see what might be causing your problems with the current version of your MacoS. Downgrading might not solve your problems.

I advise the cleanest and quickest solution, which is to put your MBP in DFU mode and blast it with another Mac. Using a USB stick works but it's not really the same procedure as on Intel Macs, you need to carefully delete the old volume group from Recovery before you install, as the Mac technically now boots from an internal partition rather than the USB as such, which just contains the installer.

Also, and this may not be apparent, but try using another port for your USB stick. Yes I know it's crazy, but Apple has documented that booting USB from the DFU port will not work. So you need to identify which port is your DFU port, and then *not* use that port for the USB stick.

Again though, remember that as Paul said, downgrading may not actually be the best option here if you have data that is no longer compatible with an older version, such as your Apple Music library.

As your problem is related to having issues with VoiceOver, would Apple's accessibility team be able to help you?

With Apple Silicon, things around booting, installing and cloning have got really hairy, to the point that it's best to always take the path of least resistance and do your best with your existing backups, just like on iOS really. It's crazy, but you're not supposed to think of Macs and macOS as an open system, because it's not; you instead work within the confines allowed you.

Good luck with it.