The more Bitcoin 2s you have in your Bitcoin 2 wallet, the higher the chances and frequency of getting block rewards. Only a small portion of the coins
in circulation are being staked at any given time so you do not need to own a lot of Bitcoin 2s to be able to get block rewards.
If for example the staking ROI
is 55%, and you have 400 BTC2 on your fully updated staking wallet, you would averagely get around 1 reward per day.
If you staked with 4000 BTC2, then ~10 rewards per day averagely, and so on. The rewards for masternode holders are more frequent.