you can trust sites that are run by real companys and look legit.
hashocean -> a lot of red flags and no way like a legit company
see here:

no terms of use
no imprint or real data (like links to a commercial directory)
no proof of mining
hidden domain registration that costs extra money
unrealistic payouts (why would they need your money if it is so profitable)
5% refereal programm
..... can be continued but im too lazy

Just use your brain next time.
Nobody wants to make you rich, all they want is your (hard) earned money without a lot of efford.