Jus read that there is a patch for Elex 2 available but I could not find a link for downloading. Does anybody know where I can downlad the patch?

Latest version on GOG is 1.02.
If you are using GOG Galaxy it should update automatically.
But it is also available via the offline installers (go to your game library and select view downloads on elex 2).

After 1.02 there was another update. 1.00b is still showing in my library.

I am also waiting for an update of the german offline installer version. Only version 1.00b is currently available. It would be nice if GOG or Piranha Bytes would update this.

You should / must switch to the English installation files, download the updates there and these are also compatible with the installation files of the other languages.
Ihr solltet / müsst auf die Englischen Installationsdateien wechseln, dort die Aktualisierungen/Updates herunterladen und diese sind auch mit den Installationsdateien der anderen Sprachen kompatibel.

Thank you for the workaround.

But I prefer an updated version of the german offline - installer. Youhave to download the main game plus 3 patches.