I have bad experienced with a cloud mining "hashocean" I think. And also my friend, we've invested and like cloud vanished and not leaving any traces at all. After that I've started to doubt bitcoin and leave. Until now I came back to regain what I've wasted for so long. Scamming sites are made to gain profit to fool others that I condone and will not be on that situation again. My advice is just be careful and be observant on anything/sites other than this forum.
I also had a bad experience a few months ago with a cloud mining. But they are a total scam site. Never again I fall for their trap. Initially thought that they are legit, however, it turns out that I'm wrong. I'm not saying that they are all scam, but some are only there to really get people's money. So beware.