I think for the weekly bonus on every gambling site is being placed in the site there, or their own bonus is being kept under hidden, ~
The weekly bonus formula isn't disclosed in most of the casinos. But it is based on the gameplay activity everywhere. I have only noticed the opposite at Wolfbet. They give a fixed amount.
I play there off and on and never had any issues. I am not sure how the bonuses work but maybe it changes from level to level? Maybe the higher level you are, the more addons you can get based on deposits, losses, withdrawals, etc?
Maybe it changes from level to level, and the bonus amount is fixed there for a certain level. It doesn't change from bronze 1 to bronze 5 rank. The daily charge is based on our recent gameplay activity though. It considers our losses to boost the bonus amount. But the amount of daily charge is also low.