After updating on sequoia, an error constantly crashes with the WindowsServer process. All suggestions from the Internet do not help

So, I sometimes think that people jump to Safe Boot a bit quickly...but I think you should restart in Safe Boot a see if the problem still occurs without any kernel extensions or login items loading.

If the problem still persists in Safe Boot - you probably need to start with reinstalling the OS from Recovery Mode.

If it doesn't persist and the OS is working properly in Safe Boot - then you will need to start looking at installed software as the cause of the problem, most likely something with a kernel extension or something incompatible that is running as a login item.