The apt update after 

> uname -a

Linux my-machine 5.10.0-18-amd64 #1 SMP Debian 5.10.140-1 (2022-09-02) x86_64 GNU/Linux

(this one?!)

did not work on my machine. I had to revert back to 5.10.140-1. its a AMD Ryzen 3 3200G with Radeon Vega Graphics system. And its LTS debian bullseye, btw.

And I think some timeout happens with regards to graphics.