I suggest you to stay away From Bitcoin mining sites, because the amount of Mining Bitcoins is half after halving. And now all the Bitcoin mining sites are Scamming people.... So Stay away from all Mining sites....
No it will not happen if you know that the place you put the money to invest in the mining sites if they are actually running their businesses like genesis mining is one of the trustworthy sites.
are you sure they will not scam us because last time people said hashocean are trustworthy cloud mining sites but in the fact they were gone now however for me currently mining aren't profitable any longer especially after halving i think may be they will cut out profit users became a half
Not too sure but if we invest in the genesis it's much safer because they can provide evidence of their mining. it's different if you invest in hashocean they only say you can get fast ROI when you invest your money on them.