CANDU reactors use un-enriched Uranium. Technology exists, and has been in use for half a century.

The modern Advanced CANDU reactor in fact does use moderately enriched uranium. The cost of enrichment has fallen greatly since the original designs, so the benefit of using natural uranium has mostly dissipated, and enrichment provides some operational benefits.

But the German government has stopped ALL research in nuclear power usage. Even if there was a safe and cheap solition that would not make us dependent from Russia, Germany would not find it because they decided to not even try. It is an absolute disgrace.

The German federal government is funding Wendelstein 7-X, a large, experimental fusion reactor of the stellerator type, to a high degree (9/10 of 80% = 72% as it seems?), so this statement cannot be true in general (maybe you are thinking only of nuclear fission research?).

Stellarators (like tokamaks) have terrible volumetric power density, so it's really doubtful they can ever be made economically competitive, even with fission as it currently exists.

40 % is not bad. That leaves 60 % other suppliers.