I found this thread CLOUD MINING 101 really informative about the whole cloud mining aspect.
Indeed most of them are scam.
In the thread They have an easy method.
How to decide wether a cloud mining company is a scam or not.
Here it is:
https://bitcointalk.org/index.php?topic=878387.0Lots of extremely valuable info there,worth the read.
If you are still behind any of the cloud mining solutions, please stop shilling about them. It is a big scam in the crypto world. So, don't suggest any of cloud scam shit money earning.