We know that all staking sites are fake and fraudulent.
Not true. You're wrong if you generalize things like this on all staking sites. They don't have sustainable finance models for running their staking pools a long time but it's about their design and different than scam or fraud.
StakingBonus.com says it can give $900 daily profit. What do you think
If you're aware of Impermanent Loss with Staking, you will see that in long term of staking, you will have very big risk of loss includes your initial capital value.
Such promise for $900 daily profit is too good to be true, and if you realize this fact, you will stay away from this site and its offer. Assume everyone joins it will get $900 daily profit, where the profit actually comes from?