Can't disable Windows Update and the Windows 11 update cripples my computer

Hi -

I am running Windows 10. The Windows update that pushes Windows 11 disables my computer - it gets stuck in a loop, requiring a hard shut down each time and the use of the repair tool to remove the update. I forgot how I did this but I found a message indicating that my PC can't handle Windows 11. Ok, fine.

I've tried MULTIPLE times to disable windows update using the Services application. No matter how many times I change Windows Update to "Disabled" it eventually gets turned back on and every few days this obnoxious push happens. I've even found the downloaded update files and deleted them. No luck. It will even do this push while the computer is in sleep mode. It's driving me insane.

Please, is there a way to stop this update/push once and for all? I'm aware of the security issues of not updating but the lock up is maddening. Thanks in advance.

(edited to add Windows spec - sorry): Windows OS build: 19044.1826, 64-bit version 21H2 "Experience" - Windows Feature Experience Pack 120.2212.4180.0