If removing the 26H2 update resolves the problem, there may be some incompatibility in that update that is causing the system to freeze up, I need to check if there is any other problem indicated on your system.
Please check to see if your laptop is producing any small Watchdog dump files, I will check those to see if they provide any insight into a potential cause of the system crashes.
Open Windows File Explorer.
Navigate to C:\Windows\LiveKernelReports
If there are any Watchdog dump files in the sub-folders of that folder, copy the files onto your Desktop, then zip those up.
Upload the zip file to the Cloud (OneDrive... etc.), then choose to share those and get a share link.
Then post the share link here to the zip file, so I can take a look for you.