The system with the Internet adapter is not working. Network adapter: Realtek RTL8821CE 802.11ac PCIe Adapter

When installing version 20.0-SP3 for Intel Slim, I encounter a problem that is most likely related to the Internet adapter. When connecting to the Internet, the operating system simply stops and nothing can be done except restarting the laptop. If you turn off the Internet immediately after logging into the system, this problem does not occur. I did not have this problem with version 19.0 for Intel Legacy; the internet works fine with this version and the laptop does not stop working. I have a similar problem when connecting to the internet in ChromeOS Flex, so I think the problem is related to the internet adapter.

Perhaps the issue lies with other components:
Intel Pentium Silver N5000 CPU
Intel(R) UHD Graphics 605 video adapter
Realtek RTL8821CE 802.11ac PCIe Adapter

This WiFi chip has common issue in Linux. Buy an intel WiFi chip would be the easiest way to solve your problem.