Not possible to uninstall some programmes. I find programmes I cant install and want to uninstall them but is not possible

Ieos-diagnostic-210103_161704_UTC 0200.txt (5,7 Mo)
iagnostic file:

System applications cannot be uninstalled is part of the Operasinal Sitema

Hello Leandro,
The right expression is " I find programmes that I have not installed and I want to uninstall them but is not possible".
Befor on my PC I had only one page of programmes on the screen. Now I have three pages.
Calculator, Clocks, Selfie and many other programmes which are after Disks. Between them I have double of LibreOffice. They haven’t button uninstall. Why? I thing that they aren’t from OS.
Thank you in advance.