Hosted miners or Cloud Miners are even charging a fee to set up and operate mining devices which will decrease your mining rewards even more but you won't have to care for technical details to set it up and maintain it.
Cloud mining is either mostly a scam or an investment with uncertain results and risks. In any case, beginners should not think about mining as a means of obtaining Bitcoin. Mining is an economic activity that requires experience, capital, and technical and detailed knowledge, as any error or delay may cause the loss of your money. Instead of cloud mining, buy Bitcoin or learn to trade.