NanoPi-R5C not able to setup keyboard, clock with debian 11 installed

hi, I’ve just installed debian 11 (bullseye) on the eMMC and now i’d to customize it to my needs, yet I can’t change keyboard layout, neither clock.
I tried also to do a sud apt update and nothing happened as expected (mirrors link are down for 1 year.

what can I do to solve all of these?

How to use Debian can be found here:

If you need to rebuild your system, see here:

all fine, thank you !