Restart and Shutdown freezing desktop

Dear Community,

i need your help in solving an issue im encountering on my mac book pro.

Im having the problem that every time i shutdown or restart my mac book the process is not finalised and the desktop freezes. Logout works just fine

Sysinfo:

What have i done so far to identify the issue:

1. I have removed all login items from my admin user (the one i am using daily):
   1. Problem still exists
2. Log out and into another user, try to reboot from here:
   1. Problem is the same as with my daily user, shutdown/reboot freezes desktop
3. Hard reboot and boot into recovery mode, try rebooting from here:
4. Run etrecheck and check unsigned files under major issue section.
   1. Have removed all not needed Launchd files
   2. Cleaned up all files missing executables
   3. Have kept the ones i need i.e. Microsoft Office etc

• • • Problem still exists

How can i track down the root cause here?

Is there a syslog i can review that is usually being written during reboot?

Thanks a lot for your help.