Sorry for this simple question:
What's going on wiht moon? I am holding a litte amout of a few millions moon.... hold them or what to do now? Are moon worthless?

That depends on your faith.
You have to be ready to hold it over long term.
If not, you'll be cheated with dumps/bad news and will sell it anyway.
Now its market cap is about $80,000.
Even one large investor could buy everything and what if someone wants to invest $200,000 or $500,000?
Mooncoin is one of the brightest, famous, time-tested coins.
One Billion Mooncoins < $400 now. Better to have one, than spend this money for buying a new gadget.