Update: I turned my sync with the icloud app on as I have read that, when i erase my fotos on one device they will be erased on my other devices too. Yesterday I erased a lotta fotos on my mac, with no icloud sync on, but connected cable. No as i turned sync on just on my phone, all the unwanted fotos got erased. iCloud sync was deactivated, because my fotostore exceeded 5gigs and they said i need bigger cloud storage to load my fotos up. Very strange, but nice too. I guess the sync happened per cable and for confirmation you need to activate icloud sync. Conclusion: if you don‘t want fotos uploaded to some servers in the www keep the mediathek bigger as 5 gig and activate iCloud sync they tell ya it‘s to big for icloud they turn it off, no upload and everything is nice!!! I don’t know what is the sense that it works that way, but at least I know how it works now. Sorry apple for yelling at ya!!! but it is still not intuitive. But when you know how it functions it runs smooth like hell. It is not the kind of control I want to have over my device according to privacy but my it’s because of my technical incompetence and i only try the at least for me obvious ways.