You are indeed presenting fascinating insects here.
One could have seen even more details when using a better camera, but nevertheless I granted you a 100 % upvote. :)

Last but not least, here comes the STAR of the event, an giant beetle that I forgot how it is called. I was really shocked when I hold in my hand.

Here in "Fascinating Insects" it's our job to help you: It's Chalcosoma atlas (Atlas beetle). :-)