Hello everyone, advise the newcomer in the mining of crypto-currency, what kind of mining should be chosen: cloudy or ordinary?

I rented nicehash to ucrypto.net and was on the turn of fast blocks
I earned 13,100 eth, but was robbed to 2,700 eth. I was told that I do not deserve more, because earlier I did not participate in blocks 300%+
and added that I should be satisfied, since they can not pay at all

2018/05/24 http://i104.fastpic.ru/big/2018/0525/eb/_717cc8ffe08ed06fc492857c803953eb.png
2018/05/25 http://i105.fastpic.ru/big/2018/0525/2b/_7dd5266e625323250af59b654702a52b.png

I concluded, its scam pools. you can easily find yourself in my place