There is no cloud mining that I know off that can make you any real profit , In my opinion stay away far away from them . There is ton of others things that you can put your money in that is more reliable than cloud mining .
There are some mining sites that is legit but those legit one has a very little profit.
Listen here, the only mining that can get you profit is when you've invested to real mining farm or when you build your own mining rig cause let me think of it. I wonder why people will let you in, in what they are calling some "Mining" when they can just take all the profit? Real miners just need some funds and when they have accumulated or when they built the mining machine they don't need you anymore and they will solo their profit so don't believe online so I think it is better to just learn software and hardware and build your own.
There are few ways to know, though, these days it becoming complicated.
What I usually do when I was interested in cloud mining then is to always run a deep background search on it, about the company and where it is located.
This is very essential because at the process, you will surely discover something which might make you want to use it or not.
Apart from running a background check on it, also try to read recent reviews because you would see people who might not like the way the company runs and why.
Also make sure these reviews are from genuine people who might have used it. Because sometimes, some companies buys reviews just to look good.
They can't do all sorts of lies online, you can't fully depend on what's online so better check out the actual site (the actual location) and check what are they mining and what are they doing, some mining are not profitable nowadays because mining is getting hard. And again I will just recommend to build your own. Sometimes, Even Items online that has a pretty good reviews can be a failure when you already get it.