The real truth about cloud mining like Nice Hash is you are not going to make a return to your cloud mining contract. This business model is only good to get more money for the company.

Why a company rents his hashing rate when it can only make money for himself? Buying mining contracts will not bring the money back in your pocket.

You should avoid it, and if you really want to mine, why not build your own mining rig as a hobbyist instead.