apt-get update failed on WSL2

As @Seokmin Hong said

I found it. It's because of Avast Firewall. It's work well when I disable it.

It specifically doesn't work when the current connection is set to "Public network". It automatically works when it's changed to "Private network". No need to disable the firewall, just set it to private.

I found it. It's because of Avast Firewall. It's work well when I disable it.