THX a lot! ...
Now I started this:
If you have any other errors, you can clear out the pacman keyring and start fresh:
sudo rm -fr /etc/pacman.d/gnupg
sudo pacman-key --init
sudo pacman-key --populate archlinux chaotic
sudo pacman -Syy archlinux-keyring chaotic-keyring
sudo pacman -Syu
It actuall works all the keys are refreshed, but now the Question ... Yes or No?
...
(9/9) Syncing all file systems...
╭─david@Forces in ~ took 21s
╰─λ LANG=C sudo pacman -Syu
warning: config file /etc/pacman.conf, line 34: directive 'TotalDownload' in section 'options' not recognized.
:: Synchronizing package databases...
core is up to date
extra is up to date
community is up to date
multilib is up to date
chaotic-aur is up to date
:: Starting full system upgrade...
:: Replace libcanberra-pulse with extra/libcanberra? [Y/n]